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\f14. The chain rule states that the derivative of the composition of two functions is the derivative of the function evaluated at the function times the derivative of the function. 15. If y is a differentiable function of u, and u is a differentiable function of x, then dy dx 16. Find dy/dx. (a) y = (x2+ 5)10 (b) y = VI +6x 17. Find dy/dx. (a) y = sin(3.x + 2) (b) y = (x2 tan x)419. Given that f'(0) = 2, g(0) =0 and g'(0) = 3 find (fog)' (0)