3. (10 pts) Find the slop of the tangent line of the given curve at a point (1, It) x3 + xy + cos(xy) = 4. (10 pts) Consider a given function f (x) = = on [1 , 8]. The graph is given below. -2- 0 8 a. Find a point c that satisfies the conclusion of the Mean Value Theorem. b. Mark the point you got from part(a) on the graph to illustrate the conclusion of the Mean Value Theorem