find the second derivative
f(x) = e^(-x^2/2) find the second derivative
f(x) = e^(-x^2/2) @Mathematics

Question

find the second derivative 
f(x) = e^(-x^2/2) find the second derivative 
f(x) = e^(-x^2/2) @Mathematics

myininaya · Answer

$$f'(x)=(\frac{-x^2}{2})'e^{\frac{-x^2}{2}}$$

anonymous · Answer

$$e^{-x ^{2}/2}$$

anonymous · Answer

second derivative?

myininaya · Answer

find the derivative of the first derivative

myininaya · Answer

$$f''(x)=(\frac{-x^2}{2})''e^{\frac{-x^2}{2}}+(\frac{-x^2}{2})'(\frac{-x^2}{2})'e^{\frac{-x^2}{2}}$$

anonymous · Answer

alright now I have to set that equal to zero and solve for x

myininaya · Answer

why? 
you are trying to find second derivative
are you looking for inflection points?

anonymous · Answer

Second derivative e^(-x^2/2) *(x^2 - 1)

anonymous · Answer

the interval on which the graph is concave up and concave down and inflection points

anonymous · Answer