i need help with these integrals 1. integral from 0 to infinity e^(-ax) cosbx dx 2. integral from 0 to 1 1/sqrt(x(1-x^2)) thanks
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I'm not sure, beacause I didn't did it, but I have an idea for the second. Let $\displaystyle \sqrt{x}=u$ then you will obtain $\displaystyle $\displaystyle \int \dfrac{1}{\sqrt{1-u^4}} du$$ then by parts will be easy but rather long
For the first, use integration by parts twice.
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