(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

intergral from pi to 0.

of

(sin(3t)dt)^4

3. The attempt at a solution

okay so i know how to do this but when i tried substitution putting 3t=u and (1/3)du= dt i always came with the the wrong coefficient at the end with the answer and so i would multiply it wrong. but then when i do not use u/du substitution everything works well? why is that? what is the difference? and im using u/du substitution improperly or something?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Integration by parts help just the beginning part for this one

**Physics Forums | Science Articles, Homework Help, Discussion**