Math 110 Course Resources - Derivatives Course Packet on computing derivatives using the limit definition Let f(x) = Vx. (a) Simplify (15 + h) - f(15) h Algebraically simplify your answer until you have cancelled out the factor of h in the denominator. (b) Evaluate lim f(15 + h) - f(15) h-0 h If an answer does not exist, enter DNE. (c) Determine the equation of the line tangent to y = f(x) at x = y