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User:Ricardo sandoval

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38:: A demonstration of the Euler formula in the section differential equations proof (e^{ix}'=ie^{ix}). I think this demonstration is more direct and intuitive. Observation at the beginning of proofs, since problems with rigor as definition of the e^{ix} used is not cited in some proofs. Added a definition by limit of e^{z} as lim(1+z/n)^n. (not on right now its all under discussion) 2328: 2399:
In fact the finite sums at the right converge to the infinite sum so their diference can be made as smaal as one wants and each term on the initial sum converges to the corresponding term at the end so a finite sum of the terms at the initial sequence can be made as close as one wants to the partial
29:: One paragraph near the end talking about the harmonic motion. I was impressed no one did that before, since it is a very important physics concept. Also pointed trigonometric functions are projections of the circular movement. And explained the animation on the side. Added table for tangents. 1967: 2141: 1768: 2147: 2970: 538:
Alhfors "Complex Analysis" (1953), Robert B. Ash "Complex Variables"(1971), Anthony B. Holland "Complex function Theory" (1980), Greene/ Krantz "Function Theory of One Complex Variable"(2002), T. Gamelin "Complex Analysis"(2001)
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One exercise would be to show they are all equivalent, and more so to prove directly the equivalence of each pair (15 of them). There would be also variations if you restricted to real, imaginary, or complex numbers.
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are not equivalent as one would expect and actually there are functions that satisfy the second that are discontinuous everywhere, I think this depends on the axiom of choice but I am not sure.
1973: 2863: 533: 1640: 2323:{\displaystyle =\lim _{n\rightarrow \infty }\sum _{k=0}^{n}(1)\left(1-{\frac {1}{n}}\right)\left(1-{\frac {2}{n}}\right)...\left(1-{\frac {k-1}{n}}\right){\frac {x^{k}}{k!}}\ } 1307: 902: 684: 1198: 943: 1244: 1157: 798: 760: 981: 720: 338: 1090: 1033: 302: 1359: 2986: 1111: 1054: 1002: 836: 1384: 1406: 2870: 1554: 549: 2691: 74:: Added the "If the angle between the sides is right it reduces to the Pythagorean theorem" to make the citation of the cosine law more understandable. 1419: 2412: 349: 2334: 2572: 1962:{\displaystyle e^{x}=\lim _{n\rightarrow \infty }\sum _{k=0}^{n}{\frac {(n)(n-1)(n-2)...(n-(k-1))}{k!}}{\frac {x^{k}}{n^{k}}}\ } 147: 197: 129: 2136:{\displaystyle =\lim _{n\rightarrow \infty }\sum _{k=0}^{n}{\frac {(n)(n-1)(n-2)...(n-(k-1))}{n^{k}}}{\frac {x^{k}}{k!}}\ } 32:
To do: The circular movement explains the derivatives of the sine and cosine very nicely, I wonder were that could fit.
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take out POV in the section generalization in "a 'very' important generalization" and "a 'natural' generalization".
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To do: Add a picture showing the rectangle and the half right triangle.(already done by someone else, Thank you!)
1763:{\displaystyle e^{x}=\lim _{n\rightarrow \infty }\sum _{k=0}^{n}{\frac {n!}{k!\,(n-k)!}}{\frac {x^{k}}{n^{k}}}\ } 114:: Explained the effect of each term on the graph. Expanded the maximum/minimum analysis for the bivariate case. 221: 239: 47:(circle-triangle): Added a geometrical proof of the converse, I think it makes the converse more intuitive. 26: 257: 176:, already found that the power circle proofs can be simplified(the French one I think its too simplified) 117: 153: 1249: 844: 92:: Added that the diagonal crosses at he midpoints, are equal, and can be calculated using Pythagoras. 629:
E. Townsend "Functions of a complex variable" 1915, Feynman "Lectures on Physics" Algebra chapter.
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Definition (2) avoids the problem of showing that such function exists by using Euler's formula.
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could be explained by multiple application of trig identities(not rigorous but more insightful).
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geometrical interpretation (as rotation and stretching) rules! but need to emphasize that more?
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add that every non-isosceles triangle has two different versions(reflected, non reflected)?
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changed order of relationships, and excluded i and -i from the power series of arctan.
123: 44: 2965:{\displaystyle \cos(x)+i\sin(x)=\lim _{n\rightarrow \infty }(1+i{\frac {x}{n}})^{n}\,} 2980: 1626:{\displaystyle e^{x}=\lim _{n\rightarrow \infty }\left(1+{\frac {x}{n}}\right)^{n}\ } 619:{\displaystyle e^{z}=\lim _{n\rightarrow \infty }\left(1+{\frac {z}{n}}\right)^{n}\,} 2801:{\displaystyle \cos(x)+i\sin(x)=(\cos({\frac {x}{n}})+i\sin({\frac {x}{n}}))^{n}\,} 126:: Changed wording at the lead, some details on principal root and rational powers. 59: 68:: Added 2R = \frac{abc} {2A} to make the equation more understandable and useful. 251: 120:: Added a_n=a_m+(n-m)*r there a nice interpretation for that(add it somewhere?) 1540:{\displaystyle (a+b)^{n}=\sum _{k=0}^{n}{\frac {n!}{k!\,(n-k)!}}a^{n-k}b^{k}\ } 191: 179: 173: 159: 135: 2558:{\displaystyle (\cos(x)+i\sin(x))(\cos(y)+i\sin(y))=\cos(x+y)+i\sin(x+y)\ \,} 800:
as the line integral from 1 to z of 1/z it is needed to choose the "branch".
86:: Added that the ratio c/d is always the same so the definition makes sense. 2810:
When n is big x/n is small so cos(x/n) is almost 1 and sin(x/n) almost x/n.
101: 89: 435:{\displaystyle e^{z}=1+z+{\frac {z^{2}}{2!}}+{\frac {z^{3}}{3!}}+\cdots \,} 65: 80:: Completed the steps on the demonstration using difference of squares. 227: 185: 141: 108:
and fails when parallel sides are equal(explaining why geometrically).
2390:{\displaystyle \rightarrow \sum _{k=0}^{\infty }{\frac {x^{k}}{k!}}\ } 254:
article is much better in French with nice geometric interpretations.
203: 98:: Added a link to Visual complex Analysis a book by Tristan Needham. 62:: Tried a clearer wording for the lead and calculation parts(done?) 1312:
I think this is the best way to introduce the real exponential.
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make subsections, change second paragraph of calculus section.
2677:{\displaystyle (\cos(x)+i\sin(x))^{n}=\cos(nx)+i\sin(nx)\ \,} 340:
and definition (1) and (2) below are by far the most common.
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Most of the literature I saw on Euler's formula define first
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To do: Don't know what to make of some of the other proofs.
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changed second paragraph of calculus section (very rough)
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by induction or by multiple application of the last one.
633:(4) As the unique solution of the differential equation: 132:
added relation to absolute property of complex numbers.
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Definitions (excepting (2)) can also be modified to get
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Curtiss(1978), Polya(1974), Courant(1965), Rudin(1966).
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give neat demonstration of tangent half angle formula?
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Lets divide the definition of exponential in cases
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gets large, the early terms of the summation (where
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but I would guess (1),(5) are the more common ones.
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Ahlfors "Complex analysis" (1966). 2961: 2955: 2941: 2917: 2872: 2854: 2848: 2834: 2817: 2797: 2791: 2774: 2746: 2693: 2673: 2619: 2574: 2554: 2414: 2368: 2362: 2356: 2345: 2336: 2301: 2295: 2272: 2237: 2211: 2185: 2174: 2158: 2149: 2114: 2108: 2100: 2017: 2011: 2000: 1984: 1975: 1948: 1938: 1932: 1843: 1837: 1826: 1810: 1797: 1791: 1749: 1739: 1733: 1711: 1694: 1688: 1677: 1661: 1648: 1642: 1614: 1599: 1575: 1562: 1556: 1528: 1512: 1486: 1469: 1463: 1452: 1439: 1421: 1393: 1368: 1331: 1298: 1251: 1235: 1229: 1208: 1189: 1164: 1148: 1142: 1121: 1102: 1097: 1081: 1075: 1069: 1045: 1040: 1024: 1018: 1012: 993: 988: 972: 963: 957: 934: 909: 893: 846: 827: 822: 789: 772: 751: 734: 711: 691: 675: 641: 615: 609: 594: 570: 557: 551: 524: 476: 463: 457: 431: 409: 403: 384: 378: 357: 351: 329: 309: 293: 287: 281: 212:correct the Indian power series entry. 17:My main interest is in math articles. 2987:Wikipedians interested in mathematics 7: 814:First I will add another definition 218:give the geometrical demonstration. 2924: 2567:by trigonometric identities, then 2404:2B + (trig identities) implies 3B 2357: 2165: 1991: 1817: 1668: 1582: 577: 206:add section of circles on nature. 14: 1302:{\displaystyle f(x+y)=f(x)f(y)\,} 897:{\displaystyle f(x+y)=f(x)f(y)\,} 200:some simplification is needed? 156:details for the SSA ambiguity. 148:Inverse trigonometric functions 2952: 2929: 2921: 2907: 2901: 2886: 2880: 2845: 2822: 2788: 2784: 2771: 2756: 2743: 2734: 2728: 2722: 2707: 2701: 2667: 2658: 2643: 2634: 2616: 2612: 2606: 2591: 2585: 2576: 2548: 2536: 2521: 2509: 2497: 2494: 2488: 2473: 2467: 2458: 2455: 2452: 2446: 2431: 2425: 2416: 2338: 2197: 2191: 2162: 2092: 2089: 2077: 2068: 2056: 2044: 2041: 2029: 2026: 2020: 1988: 1918: 1915: 1903: 1894: 1882: 1870: 1867: 1855: 1852: 1846: 1814: 1724: 1712: 1665: 1579: 1499: 1487: 1436: 1423: 1295: 1289: 1283: 1277: 1268: 1256: 1219: 1213: 1180: 1174: 1132: 1126: 925: 919: 890: 884: 878: 872: 863: 851: 807:My opinions on Euler's formula 786: 780: 748: 742: 702: 696: 672: 666: 657: 651: 574: 521: 518: 512: 497: 491: 482: 198:Brahmagupta-Fibonacci identity 130:Brahmagupta-Fibonacci identity 1: 2865:for big n. So we should have 1239:{\displaystyle f(x)=a^{x}\,} 1152:{\displaystyle f(x)=a^{x}\,} 817:(6) Unique complex function 679:{\displaystyle f'(z)=f(z)\,} 449:(2) I guess deceptively as 242:article has many problems. 3003: 343:(1) As the Taylor series: 272:Research in the literature 1193:{\displaystyle f'(0)=1\,} 938:{\displaystyle f'(0)=1\,} 793:{\displaystyle \log(z)\,} 755:{\displaystyle \log(z)\,} 976:{\displaystyle e^{ix}\,} 715:{\displaystyle f(0)=1\,} 333:{\displaystyle z=x+yi\,} 222:Trigonometric identities 1085:{\displaystyle e^{x}\,} 1028:{\displaystyle e^{x}\,} 806: 297:{\displaystyle e^{z}\,} 266: 240:Uniform circular motion 162:same details as above. 27:Trigonometric functions 2966: 2859: 2802: 2678: 2559: 2391: 2361: 2324: 2190: 2137: 2016: 1963: 1842: 1764: 1693: 1627: 1541: 1468: 1402: 1380: 1355: 1354:{\displaystyle z=x+yi} 1303: 1240: 1194: 1153: 1107: 1086: 1050: 1029: 998: 977: 939: 898: 832: 794: 756: 729:(5) By first defining 716: 680: 620: 529: 436: 334: 298: 188:needs demonstrations. 118:Arithmetic Progression 2967: 2860: 2803: 2679: 2560: 2392: 2341: 2325: 2170: 2138: 1996: 1964: 1822: 1765: 1673: 1628: 1542: 1448: 1403: 1381: 1356: 1304: 1241: 1195: 1154: 1108: 1087: 1051: 1030: 999: 978: 940: 899: 833: 795: 757: 717: 681: 621: 530: 437: 335: 299: 154:Congruence (geometry) 2871: 2816: 2692: 2573: 2413: 2335: 2148: 1974: 1790: 1641: 1555: 1420: 1392: 1367: 1330: 1250: 1207: 1163: 1120: 1096: 1068: 1039: 1011: 987: 956: 908: 845: 821: 771: 733: 690: 640: 550: 456: 350: 308: 280: 2400:sum at the right. 1363:(B) Pure imaginary 1106:{\displaystyle x\,} 1049:{\displaystyle x\,} 997:{\displaystyle x\,} 831:{\displaystyle f\,} 258:de Moivre's formula 72:Pythagorean theorem 2962: 2928: 2855: 2798: 2674: 2555: 2387: 2320: 2169: 2133: 1995: 1959: 1821: 1760: 1672: 1623: 1586: 1537: 1398: 1379:{\displaystyle yi} 1376: 1351: 1320:(in construction) 1299: 1236: 1190: 1149: 1103: 1082: 1046: 1025: 994: 973: 935: 894: 828: 811:(in construction) 790: 752: 712: 676: 616: 581: 543:(3) As the limit: 525: 432: 330: 294: 112:Quadratic function 22:Main contributions 2949: 2913: 2842: 2782: 2754: 2672: 2553: 2386: 2382: 2319: 2315: 2288: 2245: 2219: 2154: 2132: 2128: 2106: 1980: 1958: 1954: 1930: 1806: 1759: 1755: 1731: 1657: 1622: 1607: 1571: 1536: 1506: 1401:{\displaystyle x} 767:Obs. By defining 602: 566: 423: 398: 2994: 2971: 2969: 2968: 2963: 2960: 2959: 2950: 2942: 2927: 2864: 2862: 2861: 2856: 2853: 2852: 2843: 2835: 2807: 2805: 2804: 2799: 2796: 2795: 2783: 2775: 2755: 2747: 2683: 2681: 2680: 2675: 2670: 2624: 2623: 2564: 2562: 2561: 2556: 2551: 2396: 2394: 2393: 2388: 2384: 2383: 2381: 2373: 2372: 2363: 2360: 2355: 2329: 2327: 2326: 2321: 2317: 2316: 2314: 2306: 2305: 2296: 2294: 2290: 2289: 2284: 2273: 2251: 2247: 2246: 2238: 2225: 2221: 2220: 2212: 2189: 2184: 2168: 2142: 2140: 2139: 2134: 2130: 2129: 2127: 2119: 2118: 2109: 2107: 2105: 2104: 2095: 2018: 2015: 2010: 1994: 1968: 1966: 1965: 1960: 1956: 1955: 1953: 1952: 1943: 1942: 1933: 1931: 1929: 1921: 1844: 1841: 1836: 1820: 1802: 1801: 1769: 1767: 1766: 1761: 1757: 1756: 1754: 1753: 1744: 1743: 1734: 1732: 1730: 1703: 1695: 1692: 1687: 1671: 1653: 1652: 1632: 1630: 1629: 1624: 1620: 1619: 1618: 1613: 1609: 1608: 1600: 1585: 1567: 1566: 1546: 1544: 1543: 1538: 1534: 1533: 1532: 1523: 1522: 1507: 1505: 1478: 1470: 1467: 1462: 1444: 1443: 1411:(3) implies (1) 1407: 1405: 1404: 1399: 1385: 1383: 1382: 1377: 1360: 1358: 1357: 1352: 1308: 1306: 1305: 1300: 1245: 1243: 1242: 1237: 1234: 1233: 1199: 1197: 1196: 1191: 1173: 1158: 1156: 1155: 1150: 1147: 1146: 1112: 1110: 1109: 1104: 1091: 1089: 1088: 1083: 1080: 1079: 1055: 1053: 1052: 1047: 1034: 1032: 1031: 1026: 1023: 1022: 1003: 1001: 1000: 995: 982: 980: 979: 974: 971: 970: 944: 942: 941: 936: 918: 903: 901: 900: 895: 837: 835: 834: 829: 799: 797: 796: 791: 761: 759: 758: 753: 721: 719: 718: 713: 685: 683: 682: 677: 650: 625: 623: 622: 617: 614: 613: 608: 604: 603: 595: 580: 562: 561: 534: 532: 531: 526: 481: 480: 468: 467: 441: 439: 438: 433: 424: 422: 414: 413: 404: 399: 397: 389: 388: 379: 362: 361: 339: 337: 336: 331: 303: 301: 300: 295: 292: 291: 3002: 3001: 2997: 2996: 2995: 2993: 2992: 2991: 2977: 2976: 2951: 2869: 2868: 2844: 2814: 2813: 2787: 2690: 2689: 2615: 2571: 2570: 2411: 2410: 2407:you can prove 2403: 2374: 2364: 2333: 2332: 2307: 2297: 2274: 2265: 2261: 2230: 2226: 2204: 2200: 2146: 2145: 2120: 2110: 2096: 2019: 1972: 1971: 1944: 1934: 1922: 1845: 1793: 1788: 1787: 1745: 1735: 1704: 1696: 1644: 1639: 1638: 1592: 1588: 1587: 1558: 1553: 1552: 1524: 1508: 1479: 1471: 1435: 1418: 1417: 1410: 1390: 1389: 1365: 1364: 1328: 1327: 1318: 1316:The many proofs 1248: 1247: 1225: 1205: 1204: 1166: 1161: 1160: 1138: 1118: 1117: 1094: 1093: 1071: 1066: 1065: 1063: 1037: 1036: 1014: 1009: 1008: 985: 984: 959: 954: 953: 948: 911: 906: 905: 843: 842: 819: 818: 809: 803: 769: 768: 731: 730: 728: 688: 687: 643: 638: 637: 632: 587: 583: 582: 553: 548: 547: 542: 472: 459: 454: 453: 448: 415: 405: 390: 380: 353: 348: 347: 306: 305: 283: 278: 277: 274: 269: 267:Euler's Formula 263: 246:Complex numbers 233: 216:Heron's formula 165: 106:Heron's formula 96:Complex numbers 78:Heron's formula 53: 36:Euler's formula 20: 16: 12: 11: 5: 3000: 2998: 2990: 2989: 2979: 2978: 2958: 2954: 2948: 2945: 2940: 2937: 2934: 2931: 2926: 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2203: 2199: 2196: 2193: 2188: 2183: 2180: 2177: 2173: 2167: 2164: 2161: 2157: 2153: 2126: 2123: 2117: 2113: 2103: 2099: 2094: 2091: 2088: 2085: 2082: 2079: 2076: 2073: 2070: 2067: 2064: 2061: 2058: 2055: 2052: 2049: 2046: 2043: 2040: 2037: 2034: 2031: 2028: 2025: 2022: 2014: 2009: 2006: 2003: 1999: 1993: 1990: 1987: 1983: 1979: 1951: 1947: 1941: 1937: 1928: 1925: 1920: 1917: 1914: 1911: 1908: 1905: 1902: 1899: 1896: 1893: 1890: 1887: 1884: 1881: 1878: 1875: 1872: 1869: 1866: 1863: 1860: 1857: 1854: 1851: 1848: 1840: 1835: 1832: 1829: 1825: 1819: 1816: 1813: 1809: 1805: 1800: 1796: 1752: 1748: 1742: 1738: 1729: 1726: 1723: 1720: 1717: 1714: 1710: 1707: 1702: 1699: 1691: 1686: 1683: 1680: 1676: 1670: 1667: 1664: 1660: 1656: 1651: 1647: 1617: 1612: 1606: 1603: 1598: 1595: 1591: 1584: 1581: 1578: 1574: 1570: 1565: 1561: 1549:combined with 1531: 1527: 1521: 1518: 1515: 1511: 1504: 1501: 1498: 1495: 1492: 1489: 1485: 1482: 1477: 1474: 1466: 1461: 1458: 1455: 1451: 1447: 1442: 1438: 1434: 1431: 1428: 1425: 1397: 1375: 1372: 1350: 1347: 1344: 1341: 1338: 1335: 1317: 1314: 1297: 1294: 1291: 1288: 1285: 1282: 1279: 1276: 1273: 1270: 1267: 1264: 1261: 1258: 1255: 1232: 1228: 1224: 1221: 1218: 1215: 1212: 1188: 1185: 1182: 1179: 1176: 1172: 1169: 1145: 1141: 1137: 1134: 1131: 1128: 1125: 1101: 1078: 1074: 1044: 1021: 1017: 992: 969: 966: 962: 946: 945: 933: 930: 927: 924: 921: 917: 914: 892: 889: 886: 883: 880: 877: 874: 871: 868: 865: 862: 859: 856: 853: 850: 826: 808: 805: 788: 785: 782: 779: 776: 750: 747: 744: 741: 738: 723: 722: 710: 707: 704: 701: 698: 695: 674: 671: 668: 665: 662: 659: 656: 653: 649: 646: 627: 626: 612: 607: 601: 598: 593: 590: 586: 579: 576: 573: 569: 565: 560: 556: 536: 535: 523: 520: 517: 514: 511: 508: 505: 502: 499: 496: 493: 490: 487: 484: 479: 475: 471: 466: 462: 443: 442: 430: 427: 421: 418: 412: 408: 402: 396: 393: 387: 383: 377: 374: 371: 368: 365: 360: 356: 328: 325: 322: 319: 316: 313: 290: 286: 273: 270: 268: 265: 124:Exponentiation 45:Thales theorem 13: 10: 9: 6: 4: 3: 2: 2999: 2988: 2985: 2984: 2982: 2975: 2972: 2956: 2946: 2943: 2938: 2935: 2932: 2918: 2910: 2904: 2898: 2895: 2892: 2889: 2883: 2877: 2874: 2866: 2849: 2839: 2836: 2831: 2828: 2825: 2819: 2811: 2808: 2792: 2779: 2776: 2768: 2765: 2762: 2759: 2751: 2748: 2740: 2737: 2731: 2725: 2719: 2716: 2713: 2710: 2704: 2698: 2695: 2687: 2684: 2664: 2661: 2655: 2652: 2649: 2646: 2640: 2637: 2631: 2628: 2625: 2620: 2609: 2603: 2600: 2597: 2594: 2588: 2582: 2579: 2568: 2565: 2545: 2542: 2539: 2533: 2530: 2527: 2524: 2518: 2515: 2512: 2506: 2503: 2500: 2491: 2485: 2482: 2479: 2476: 2470: 2464: 2461: 2449: 2443: 2440: 2437: 2434: 2428: 2422: 2419: 2408: 2405: 2401: 2397: 2378: 2375: 2369: 2365: 2352: 2349: 2346: 2342: 2330: 2311: 2308: 2302: 2298: 2291: 2285: 2281: 2278: 2275: 2269: 2266: 2262: 2258: 2255: 2252: 2248: 2242: 2239: 2234: 2231: 2227: 2222: 2216: 2213: 2208: 2205: 2201: 2194: 2186: 2181: 2178: 2175: 2171: 2159: 2151: 2143: 2124: 2121: 2115: 2111: 2101: 2097: 2086: 2083: 2080: 2074: 2071: 2065: 2062: 2059: 2053: 2050: 2047: 2038: 2035: 2032: 2023: 2012: 2007: 2004: 2001: 1997: 1985: 1977: 1969: 1949: 1945: 1939: 1935: 1926: 1923: 1912: 1909: 1906: 1900: 1897: 1891: 1888: 1885: 1879: 1876: 1873: 1864: 1861: 1858: 1849: 1838: 1833: 1830: 1827: 1823: 1811: 1803: 1798: 1794: 1785: 1783: 1779: 1775: 1770: 1750: 1746: 1740: 1736: 1727: 1721: 1718: 1715: 1708: 1705: 1700: 1697: 1689: 1684: 1681: 1678: 1674: 1662: 1654: 1649: 1645: 1636: 1633: 1615: 1610: 1604: 1601: 1596: 1593: 1589: 1576: 1568: 1563: 1559: 1550: 1547: 1529: 1525: 1519: 1516: 1513: 1509: 1502: 1496: 1493: 1490: 1483: 1480: 1475: 1472: 1464: 1459: 1456: 1453: 1449: 1445: 1440: 1432: 1429: 1426: 1415: 1412: 1408: 1395: 1386: 1373: 1370: 1361: 1348: 1345: 1342: 1339: 1336: 1333: 1324: 1321: 1315: 1313: 1310: 1292: 1286: 1280: 1274: 1271: 1265: 1262: 1259: 1253: 1230: 1226: 1222: 1216: 1210: 1201: 1186: 1183: 1177: 1170: 1167: 1143: 1139: 1135: 1129: 1123: 1114: 1099: 1076: 1072: 1061: 1057: 1042: 1019: 1015: 1005: 990: 967: 964: 960: 950: 931: 928: 922: 915: 912: 887: 881: 875: 869: 866: 860: 857: 854: 848: 841: 840: 839: 824: 815: 812: 804: 801: 783: 777: 774: 765: 762: 745: 739: 736: 726: 708: 705: 699: 693: 669: 663: 660: 654: 647: 644: 636: 635: 634: 630: 610: 605: 599: 596: 591: 588: 584: 571: 563: 558: 554: 546: 545: 544: 540: 515: 509: 506: 503: 500: 494: 488: 485: 477: 473: 469: 464: 460: 452: 451: 450: 446: 428: 425: 419: 416: 410: 406: 400: 394: 391: 385: 381: 375: 372: 369: 366: 363: 358: 354: 346: 345: 344: 341: 326: 323: 320: 317: 314: 311: 288: 284: 271: 264: 261: 259: 255: 253: 249: 247: 243: 241: 237: 236: 231: 229: 225: 223: 219: 217: 213: 211: 207: 205: 201: 199: 195: 193: 189: 187: 183: 181: 177: 175: 170: 168: 163: 161: 157: 155: 151: 149: 145: 143: 139: 137: 133: 131: 127: 125: 121: 119: 115: 113: 109: 107: 103: 99: 97: 93: 91: 87: 85: 81: 79: 75: 73: 69: 67: 63: 61: 57: 56: 55:Minor changes 51: 48: 46: 42: 39: 37: 33: 30: 28: 24: 23: 18: 2973: 2867: 2812: 2809: 2688: 2685: 2569: 2566: 2409: 2406: 2402: 2398: 2331: 2144: 1970: 1786: 1781: 1777: 1773: 1771: 1637: 1634: 1551: 1548: 1416: 1413: 1409: 1387: 1362: 1326:(A) Complex 1325: 1322: 1319: 1311: 1202: 1115: 1062: 1058: 1006: 951: 947: 816: 813: 810: 802: 766: 763: 727: 724: 631: 628: 541: 537: 447: 444: 342: 304:for complex 275: 262: 256: 250: 244: 238: 234: 232: 226: 220: 214: 208: 202: 196: 190: 184: 178: 171: 166: 164: 158: 152: 146: 140: 134: 128: 122: 116: 110: 100: 94: 88: 82: 76: 70: 64: 60:Golden ratio 58: 54: 52: 49: 43: 40: 34: 31: 25: 21: 19: 15: 1414:using that 1203:Conditions 252:Determinant 235:Perceptions 172:Revise the 160:Cosine law 1159:such that 838:such that 192:Congruence 180:Pythagoras 174:Cosine law 136:Derivative 2925:∞ 2922:→ 2899:⁡ 2878:⁡ 2820:≈ 2769:⁡ 2741:⁡ 2720:⁡ 2699:⁡ 2656:⁡ 2632:⁡ 2604:⁡ 2583:⁡ 2534:⁡ 2507:⁡ 2486:⁡ 2465:⁡ 2444:⁡ 2423:⁡ 2358:∞ 2343:∑ 2339:→ 2279:− 2270:− 2235:− 2209:− 2172:∑ 2166:∞ 2163:→ 2084:− 2075:− 2051:− 2036:− 1998:∑ 1992:∞ 1989:→ 1910:− 1901:− 1877:− 1862:− 1824:∑ 1818:∞ 1815:→ 1784:) become 1719:− 1675:∑ 1669:∞ 1666:→ 1583:∞ 1580:→ 1517:− 1494:− 1450:∑ 1388:(C) Real 1092:for real 1035:for real 983:for real 778:⁡ 740:⁡ 578:∞ 575:→ 510:⁡ 489:⁡ 429:⋯ 102:Trapezium 90:Rectangle 2981:Category 1780:<< 1171:′ 916:′ 648:′ 66:Sine law 228:Tangent 186:Pyramid 142:Tangent 2671:  2552:  2385:  2318:  2131:  1957:  1758:  1621:  1535:  204:Circle 686:with 167:To do 1246:and 904:and 2915:lim 2896:sin 2875:cos 2766:sin 2738:cos 2717:sin 2696:cos 2653:sin 2629:cos 2601:sin 2580:cos 2531:sin 2504:cos 2483:sin 2462:cos 2441:sin 2420:cos 2156:lim 1982:lim 1808:lim 1772:as 1659:lim 1635:is 1573:lim 1004:. 775:log 737:log 568:lim 507:sin 486:cos 2983:: 1200:. 1056:. 210:Pi 169:: 84:Pi 2957:n 2953:) 2947:n 2944:x 2939:i 2936:+ 2933:1 2930:( 2919:n 2911:= 2908:) 2905:x 2902:( 2893:i 2890:+ 2887:) 2884:x 2881:( 2850:n 2846:) 2840:n 2837:x 2832:i 2829:+ 2826:1 2823:( 2793:n 2789:) 2785:) 2780:n 2777:x 2772:( 2763:i 2760:+ 2757:) 2752:n 2749:x 2744:( 2735:( 2732:= 2729:) 2726:x 2723:( 2714:i 2711:+ 2708:) 2705:x 2702:( 2668:) 2665:x 2662:n 2659:( 2650:i 2647:+ 2644:) 2641:x 2638:n 2635:( 2626:= 2621:n 2617:) 2613:) 2610:x 2607:( 2598:i 2595:+ 2592:) 2589:x 2586:( 2577:( 2549:) 2546:y 2543:+ 2540:x 2537:( 2528:i 2525:+ 2522:) 2519:y 2516:+ 2513:x 2510:( 2501:= 2498:) 2495:) 2492:y 2489:( 2480:i 2477:+ 2474:) 2471:y 2468:( 2459:( 2456:) 2453:) 2450:x 2447:( 2438:i 2435:+ 2432:) 2429:x 2426:( 2417:( 2379:! 2376:k 2370:k 2366:x 2353:0 2350:= 2347:k 2312:! 2309:k 2303:k 2299:x 2292:) 2286:n 2282:1 2276:k 2267:1 2263:( 2259:. 2256:. 2253:. 2249:) 2243:n 2240:2 2232:1 2228:( 2223:) 2217:n 2214:1 2206:1 2202:( 2198:) 2195:1 2192:( 2187:n 2182:0 2179:= 2176:k 2160:n 2152:= 2125:! 2122:k 2116:k 2112:x 2102:k 2098:n 2093:) 2090:) 2087:1 2081:k 2078:( 2072:n 2069:( 2066:. 2063:. 2060:. 2057:) 2054:2 2048:n 2045:( 2042:) 2039:1 2033:n 2030:( 2027:) 2024:n 2021:( 2013:n 2008:0 2005:= 2002:k 1986:n 1978:= 1950:k 1946:n 1940:k 1936:x 1927:! 1924:k 1919:) 1916:) 1913:1 1907:k 1904:( 1898:n 1895:( 1892:. 1889:. 1886:. 1883:) 1880:2 1874:n 1871:( 1868:) 1865:1 1859:n 1856:( 1853:) 1850:n 1847:( 1839:n 1834:0 1831:= 1828:k 1812:n 1804:= 1799:x 1795:e 1782:n 1778:k 1774:n 1751:k 1747:n 1741:k 1737:x 1728:! 1725:) 1722:k 1716:n 1713:( 1709:! 1706:k 1701:! 1698:n 1690:n 1685:0 1682:= 1679:k 1663:n 1655:= 1650:x 1646:e 1616:n 1611:) 1605:n 1602:x 1597:+ 1594:1 1590:( 1577:n 1569:= 1564:x 1560:e 1530:k 1526:b 1520:k 1514:n 1510:a 1503:! 1500:) 1497:k 1491:n 1488:( 1484:! 1481:k 1476:! 1473:n 1465:n 1460:0 1457:= 1454:k 1446:= 1441:n 1437:) 1433:b 1430:+ 1427:a 1424:( 1396:x 1374:i 1371:y 1349:i 1346:y 1343:+ 1340:x 1337:= 1334:z 1296:) 1293:y 1290:( 1287:f 1284:) 1281:x 1278:( 1275:f 1272:= 1269:) 1266:y 1263:+ 1260:x 1257:( 1254:f 1231:x 1227:a 1223:= 1220:) 1217:x 1214:( 1211:f 1187:1 1184:= 1181:) 1178:0 1175:( 1168:f 1144:x 1140:a 1136:= 1133:) 1130:x 1127:( 1124:f 1100:x 1077:x 1073:e 1043:x 1020:x 1016:e 991:x 968:x 965:i 961:e 932:1 929:= 926:) 923:0 920:( 913:f 891:) 888:y 885:( 882:f 879:) 876:x 873:( 870:f 867:= 864:) 861:y 858:+ 855:x 852:( 849:f 825:f 787:) 784:z 781:( 749:) 746:z 743:( 709:1 706:= 703:) 700:0 697:( 694:f 673:) 670:z 667:( 664:f 661:= 658:) 655:z 652:( 645:f 611:n 606:) 600:n 597:z 592:+ 589:1 585:( 572:n 564:= 559:z 555:e 522:) 519:) 516:y 513:( 504:i 501:+ 498:) 495:y 492:( 483:( 478:x 474:e 470:= 465:z 461:e 426:+ 420:! 417:3 411:3 407:z 401:+ 395:! 392:2 386:2 382:z 376:+ 373:z 370:+ 367:1 364:= 359:z 355:e 327:i 324:y 321:+ 318:x 315:= 312:z 289:z 285:e

Index

Trigonometric functions
Euler's formula
Thales theorem
Golden ratio
Sine law
Pythagorean theorem
Heron's formula
Pi
Rectangle
Complex numbers
Trapezium
Heron's formula
Quadratic function
Arithmetic Progression
Exponentiation
Brahmagupta-Fibonacci identity
Derivative
Tangent
Inverse trigonometric functions
Congruence (geometry)
Cosine law
Cosine law
Pythagoras
Pyramid
Congruence
Brahmagupta-Fibonacci identity
Circle
Pi
Heron's formula
Trigonometric identities

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