Let f( X) = Vx. Ma (a) Simplify- f(21 + h) - f(21) h M eui Algebraically simplify your answer until you have cancelled out the factor of h in the denominator. Re Xn le (b) Evaluate lim (21 + h) - f(21) Im h - 0 h Am If an answer does not exist, enter DNE. Na Atl Au Au (c) Determine the equation of the line tangent to y = f(x) at x = 21. Au y = Au