Question

dy/dx (cot(5+7x)(7+6x))

Answer 1

i know the answer but im having trouble with a certain part of it

Answer 2

what is inside the cot function ?

Answer 3

cot(5+7x)

Answer 4

csc2(5+7x) (−49−42x) + 6cot(5+7x)

not sure where the -49-42x comes from

Answer 5

dunno why that post is all messed up for me?

Answer 6

ok just checking

you would use both product rule and chain rule

product rule part:
\[6 \cot(5+7x) + [\cot(5+7x)]' (7+6x)\]
chain rule part
\[[\cot(5+7x)]' = -\csc^2 (5+7x) * (5+7x)' = -7 \csc^2(5+7x)\]

Answer 7

i think the -49-42x is from distributing the -7

---> -7(7+6x) = -49 -42x

Answer 8

@TylerD , try refreshing your browser, it may make the ??? go away in your post

Answer 9

ok gonna be a few mins before i make sense of that one sec.

Answer 10

thanks