Topic : Equation of tangent to a curve , Tangent Line

4. The equation of a curve is given as f(x) = 2x2 a) Use the definition of derivative to find f' (x) . b) Hence, find the equation of the tangent line at the point (2, 8). 5. Find the equation of the tangent line to the curve f( x) = 2x2 + 1 atx = 2