This question is designed to be answered without a calculator. Use this graph of function f. -3 2 2 For how many values of x is f not differentiable over the interval (-4, 4)? O O 2 O 3 O 4This question is designed to be answered without a calculator. (x2 secx) = dx 2xtan2x O 2xsecxtanx O xsecx(2 + xtanx) O x(2secx + xtan2x)Let f be a continuous and differentiable function. Use this table of values that represents function f. Which of the following is the best estimate off '(2) based on this table of values? 2 8 1O 14