# Thread: A Problem With an integration???

1. ## A Problem With an integration???

i am having a problem with the following integration.

∫( x^2 + 20)/(xsinx + 5cosx)^2 dx

plz guide me through..

2. It's a VERY complicated Integral !!
I would use the substitution method.

The reason why I said it's complicated is because I know what the final answer is....

3. Originally Posted by subho123
i am having a problem with the following integration.

∫( x^2 + 20)/(xsinx + 5cosx)^2 dx

plz guide me through..
Where has this integral come from? Is it meant to be a definite integral?