Il. Find the dy dx in each of the following functions using appropriate rules for differentiation. Simplify your final answers. (no. 4-8: 5 points each, no. 9-10: 8 pts. each) 4-3x- x- 4. y = x-2 5. y = (x3 +1) (2x2 + 5x-3) 2x2 + 1 )2 6. y = 3x' +1 7. y= x- sin x + 2xcosx 8. 4x- +91 = 36 9. xcosy+ ycosx-1 = 0 10. sin =