Question

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Answer 1

I'm pretty sure it's A, but if someone could double check for me, that would be great.

Answer 2

so, can you rewrite it with that u sub and see if it makes sense?

Answer 3

(u+7)^5 du

Answer 4

D: that looks right

Answer 5

not quite you just want u^5 cause that makes your life the easiest right?

Answer 6

True...but I recall learning something where the u substitution didn't have anything that included the ^ and was always something that was simple like u=sinx

Answer 7

not always

Answer 8

ie if I had something like \[\int (e^{4x}+5x+12)^{89} (4e^{4x}+5) dx\]

Answer 9

my u would be \(u=e^{4x}+5x+12\)

Answer 10

It's B, then. Thanks!

Answer 11

yup np