The following are the questions I am having trouble understanding. (The answers in the boxes are the correct answers)
"(1 pt) Enter a T or an F in each answer space below to indicate whether the corresponding statement is true or false. A statement is true only if it is true for all possibilities. You must get all of the answers correct to receive credit.
1. If is continuous at , then is differentiable at
3. If and , then does not exist
4. If and , then does not exist
I have the answers but I was hoping someone could at least briefly explain why each one is true or false.
Any help would be greatly appreciated!
Thanks in advance!