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Practice 3 (Derivatives) Exercise 1. Use the definition of a derivative to find: a) f'(2), where f(x) = 13 - 2x b ) f'( -3), S'(0), where f(x) = 4- 2. Exercise 2. Find a function f and a number a such that (2 + h) - 64 lim = f(a). h-+D h Exercise 3. Find the equation for the tangent to the curve at the given point. Then sketch the curve an tangent together. a) f(x) = 4 - 1, (-1,3); b ) g(t ) = 721 (-1, 1); c) h(I) = 1', (-2, -8)