thesecret20111 one year ago Can someone please explain the solution to this indefinite integral? :)

1. thesecret20111

I've been supplied the solution but I'm not sure how it works so an explanation would be great :)

2. freckles

u=3x+1 then du=3 dx or solving for dx gives 1/3 du=dx

3. freckles

$\int\limits_{}^{}u^5 \frac{1}{3} du \\ \frac{1}{3} \int\limits u^5 du$

4. freckles

can you evaluate that ?

5. thesecret20111

Ohhhh I see how that works! Thanks so much!! :D

6. freckles

np