Guys i am not sure if u guys are aware of this, but i am posting this for the benefit of the rest who wish to check their solution on differentiation and intergration.

Online integrator

Wolfram Mathematica Online Integrator

Online differentiator

QuickMath Automatic Math Solutions

This sites are even better, does the integration and differentiation with explanation

Step by step Integration

http://xmath.hibu.no:8080/webMathema.../IntegStep.msp

Step by step differentition

solving derivatives step-by-step