Question 4.1 (10.5 marks) ble tas ble task task. ask f(x) = Let's be the last non-zero digit of your student ID number. Let f (x) be a piecewise function defined as follows |2 - 8 -82, - 2sx, (c) Is the function f differentiable at x = s? Justify your answer. c' + 28x + $2, (a) Calculate the left and right limits of f(x) at z = s. Is f continuous at a = $? Justify your answer. (d) Is the function f differentiable at a = 2s? Justify your answer. (b) Calculate the left and right limits of f(x) at x = 2s. Is f continuous at r = 2s? Justify your answer. 2s