Two problems in this question, the first I was able to do but was getting an incorrect answer and the second I'm just plain stumped on.
FIRST Q:
Here is what I've done so far... I'm coming close but my numbers aren't quite right.
...and subbing in just leaves me with the wrong answer. Where did I go wrong?
SECOND Q:
Thought to use or , but neither really panned out
Thanks in advance.
The conventional approach is to use the Weierstrass substitution: The Weierstrass Substitution Example
Can't believe I made that mistake... I was thinking of the integral and not derivative. My class isn't up to the Weierstrass substitution yet. Also, I find it funny that a proof for the integral of csc(x) I was viewing stated that the strategy was not obvious... oi!
Thanks for the help.