 Hi and welcome to the session. I am Shashi and I am going to help you with the following question. Question says, prove that following functions do not have maxima or minima. First part is function f given by fx is equal to e raised to the power x. Now let us start the solution. We are given fx is equal to e raised to the power x. Differentiating both sides with respect to x we get f dash x is equal to e raised to the power x. Now to find all the points at which f dash x is equal to 0 we will put f dash x equal to 0. Now f dash x is equal to 0 implies e raised to the power x is equal to 0 which is not possible. We know value of e is greater than 1 and for any value of x either positive or negative or 0 e will not tend to 0. So we get fx is equal to e raised to the power x does not have maxima or minima. So this is our required answer. This completes the session. Hope you understood the session. Take care and have a nice day.