Hi,

I'm studying for a test and I'm doing some integral exercises. I manage to solve a lot of them, but I'm always having difficulty with integrals that have square roots.

I have 4 equations, but I don't want the actual answer to any of them. I would just like a push in the right direction for solving them.

$\displaystyle \int{\sqrt{x}}\arcsin{\sqrt{x}}$

$\displaystyle \int{x\sqrt{L^2-x^2}}$

$\displaystyle \int{\frac{1}{\sqrt{1+e^x}}}$

$\displaystyle \int{\frac{x^2}{\sqrt{4-3x}}}$

Thanks for any help!