Use a graph below of f(x)=3e^(-9x^2) to estimate the x-values of any critical po

Question

Use a graph below of f(x)=3e^(-9x^2) to estimate the x-values of any critical points and inflection points of f(x).

critical points (enter as a comma-separated list): x= 0
inflection points (enter as a comma-separated list): x= -1/18, 1/18

Next, use derivatives to find the x-values of any critical points and inflection points exactly.
critical points (enter as a comma-separated list): x= 0
inflection points (enter as a comma-separated list): x=

I didn't get the answer fot the last one , it took the second derivates and I got 1/18 but it's correct

Explanation / Answer

try sqrt(2)/6 ,-sqrt(2)/6

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