4- 3- a) b) c) d) 5- 6- 1- 2- a) b) c) d) (10p.) Let f(x) = (40p.) Calculate the followings. f(x) = log(x + 3x). 2x = f'(2) =? f(x) = 3x + 1-2 = f'(1) =? f(x) == f'(1) =? ax + b, x+3 f(x) =*+ = (f-)'(x) =? 3, 2x + b, lim X118 9x-x+3 Inx lim =? x-1x+x-2 axis x == (20p.) Find the limit values below. lim (x+x-x) =? x480 lim x-2x-3x+2 x-x-1+4x+5 =? 2 * =? (10p.) Find the equation of the normal line of the f(x) = x + 2x function passing through the point with = 1. (10p.) Calculate the marginal revenue for q = 15 when the price is p = 100q q+5 (10p.) The demand function p = 500-3q2 is given. Calculate and interpret the elasticity of demand for q = 10.