PROBLEM 3 (P2) Use the definition of the derivative f'(x) = lim f(x + h) - f(x) h-+0 h to compute the derivative of the following functions. In each case, determine the domain of the derivative. a. f(x) = |x+11 -2 b. f(z) =-d'+x+2 C. f(z) = =|+1 PROBLEM 4 (P2) Let a be a positive integer and let b be a real number. Use the definition of the derivative to find the slope and equation of the tangent line to f(x) = a2 - x2 at I =b