Try something like
and then you can break it in two integrals and you will find a function
Evaluate this integral:
Following an example in my texbook, I've split the top line:
I need a substitution where .
Hence .
Also, completing the square
So the integral can be written as:
I know I'll end up with an inverse trig function somewhere but that's where I get stuck.
Could someone please explain what to do. Thanks a lot.