Hi guys. I am trying to integrate
by trig substiution, but I'm not really sure if you can even do trig sub here since we are dealing with square roots. If I'm right, is there another method besides trig sub to evaluate this, even if it's not necessarily easier? This is what I got:
Let
So
Substitution yields
Simplification yields
or simply:
So now we have
Using a right triangle to make substitutions, my final answer is
So again, even if this right, is there another way to evaluate this?
Thanks for any help,
James