(cos(x)) # Find the average rate of change for the function f(x) = 2 cos(x) on the interval [1, 3]. Given f(2) = 3.58 and f'(2) = -1.23. Use the tangent line to f(x) at x = 2 to estimate f(2.05). # y = x secx. Find y' (#). # Find dy for the circle (x-3)+(y-2) = 25. # M Find the x-coordinate for the local minimum of g(x) on the interval (0, 10) if g'(x) = 0.6x sin x.