I saw a guys signature with this integral-

Intgral of cos(x)/(1+x^2)^2

find it from infinity to negative infinity =]

the answer was pi/e :D im curious on finding the indefinte integral xD (Clapping)

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- May 12th 2009, 03:13 AMKhonics89Integral problem-
I saw a guys signature with this integral-

Intgral of cos(x)/(1+x^2)^2

find it from infinity to negative infinity =]

the answer was pi/e :D im curious on finding the indefinte integral xD (Clapping) - May 12th 2009, 03:27 AMmr fantastic
The indefinite integral cannot be found using a finite number of elementary functions. This might seem strange to you since obviously the quoted definite integral can be found. Even then, the quoted integral is an example of only a small set of definite integrals for this integrand whose exact value can be found.