1)For what values of x is the graph of y=e^-x^2 concave down?
I am not sure how to go about doing this problem, so please, any advice or steps on how to complete the problem will be much appreciated.
-M
Find the second derivative and set it equal to zero. Solve for all values of x and test in between those values to see if you get a negative or positive number. Negative results mean it is concave down within that sub-domain.