Question

Find critical number of the function f(x) = 18 x \ln x

Answer 1

Hi :)

Answer 2

start by first finding the derivative then set it to 0

Answer 3

I got 0 = 18x (1/x) + (lnx)(18). (its suppose to be multiply not divide sorry)
(-lnx18x)/18 = x

Answer 4

i would say \[18+18\ln(x)\] since
\[\frac{18x}{x}=18\]

Answer 5

how did you get 18 + 18ln(x)