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(1 point) Suppose that (1 point) 12 f(x) = 4e-2x In(x). Find dy/dx by implicit differentiation. Find f' (3). sin x + cos y = sin x cos y f' (3) = dyldx = (1 point) For the equation given below, evaluate y' at the point (-2, -1). (1 point) xe" - 5y = 3x +11 - 2e-1. Find the equations of both of the tangent lines to the ellipse x2 + 4y = 36 that pass through the point (12, 3). List the line with the smaller slope first. y= y at (-2, -1) = V=