[Help Needed] Deriving Quadrature and determining exactness

[delicate python]

I have attempted to use change of variable and method of undetermined coefficients but have had no luck. Really trying to understand how to solve this tut q for my final exam

[shut gale]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with: ```diff
   +close

[subtle spade]

The tickets system is disabled for this server. Enable it at: https://yagpdb.xyz/manage/624314920158232616/tickets/settings.

[delicate python]

+close