Question

f(x) = [(x^3 + 9)]ln(x^3 + 9)

whats the derivative?

Answer 1

i think they want me to put it in this form: f' = A x^B + C x^D ln(x^F + G)

Answer 2

since this is the product of two functions, let's use the product rule:
[uv]' = u'v * v'u
where
u = x^3 + 9
v = ln (x^3 + 9)

do you have u' and v'?

Answer 3

what do u mean?

Answer 4

I mean the derivative of u (du/dx) and the derivative of v (dv/dx)

Answer 5

idk let me calculate it

Answer 6

yup just use the product rule and then simplify.

Answer 7

im having a problem so its deriv of x^3+9 times ln (x^3+9

Answer 8

no,