How can you solve the problems?

14.) Determine whether each statement is Truc or False. If a statement is false, explain why or give an example that shows it to be false. a.) The maximum of a function that is continuous on a closed interval can occur at two different values in the interval. b.) If a function is continuous on a closed interval, then it must have a minimum on the interval. C.) If x = c is a critical number of the function f, then it is also a critical number of the function g(x) = f(x)+k, where k is a constant. d.) If x = c is a critical number of the function f, then it is also a critical number of the function g(x) = f(x-k), where & is a constant