Question

what is the anti derivative of -10/x^2+1??

Answer 1

http://www.wolframalpha.com/input/?i=integrate++-10%2Fx^2%2B1

Answer 2

sorry error in typing the problem. -10/(x^2+1) is the actual problem

Answer 3

http://www.wolframalpha.com/input/?i=integrate++-10%2F%28x^2%2B1%29

Answer 4

\[-10\tan^{-1} (x) + constant\]

Answer 5

^^ wolfram alpha agrees