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I like crazy math proofs and anything math related.

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e^(ix)=cos(x) + isin(x)

by the mclaurin series e^x = 1 +x +x^2/2 + x^3/6 + x^4/24 + ... cos(x) = 1 - x^2/2 + x^4/24 - x^6/720 + ... sin(x) = x - x^3/6 + x^5/120 - x^7/5040 + ... and e^(ix) = 1 +ix - x^2/2 - ix^3/6 ...
Posted by on Sun, 08 Apr 2007 23:03:00 GMT

Euler's number

e = 2.71828 18284 59045 23536 02874 71352 66249 77572 47093 69995 95749 66967 62772 40766 30353 54759 45713 82178 52516 64274 27466 39193 20030 59921 81741 35966 29043 57290 03342 95260 59563 07381 32...
Posted by on Thu, 01 Mar 2007 23:17:00 GMT

pi

3.1415926535897932384626433832795028841971693993751058209749 445923078164062862089986280348253421170679    821480865132823066470938446095505822317253594081284811174502 841027019385211055596446...
Posted by on Thu, 01 Mar 2007 23:02:00 GMT