Please select the appropriate answer for all 5 questions and then click the submit exam for grading button at the end of the page. Question 1. What is the derivative of a constant? (a) 0 (b) 1 (c) The constant itself (d) -1 Question 2. What is the derivative of x-4? (a) -4 x3 (b) -4 x-5 (c) 4 x5 (d) 4 x-5 Question 3. What is the derivative of y = log(x2)? (a) 2x (b) 1/x2 (c) 2/x (d) 1/log(x2) Question 4. Find dy/dx if y = 3t2 and x = 2t. (a) 3 (b) 3t (c) 6t (d) 6t2 Question 5. Given d/dx sin x = cos x, d/dx cos x = -sin x and tan x = sin x / cos x; Find d/dx of tan x ? (a) sin x (b) cos x (c) 1/cos2x (d) 1/sin2x