The given function f(x) changes value when x changes from X to a. Af= Xo + dx. (Type an integer or a decimal. Do not round.) a. Find the change Af= f(X + dx) - f(X). b. Find the value of the estimate df = f' (Xo ) dx. c. Find the approximation error | Af - of). f (x) = 3x , Xo = 0.1, dx = 0.1 y = f(x)/ Af = f(xo + dx) - f(xol df = f'(to) dx dx Tangent X xo + dr