Question

NEED HELP for this function : 7x√x+4

Answer 1

wat u hv to find?

Answer 2

the derivative!

Answer 3

Use product rule.

Answer 4

first change the radical to a fractional index

Answer 5

yeah i did that but i dont understand it doesnt give me the right answer according to my textbook

Answer 6

\[
(7x\cdot \sqrt{x+4})'=(7x)'\cdot \sqrt{x+4}+7x\cdot (\sqrt{x+4})'
\]

Answer 7

yeah exactly

Answer 8

oh i misread the question - it would have been better if u had writn it as
7x sqrt(x + 4)

Answer 9

my answer was 49/\[7\sqrt{x+h} +7\sqrt{x}\]

Answer 10

but in my textbook it says that 49 isnt good , i dont understand