11. Find the slope of the line tangent to the curve y = x^3 - 2x + 1 at x = 1.

4. 1

12. If y = 4cos x + sin 2x, what is the slope of the curve when x = 2 radians?

1. -3.95
2. 2.21
3. -2.21
4. -4.94

13. In the curve 2 + 12x - x3, find the critical points.

1. (-2,18) and (-2, 14)
2. (2,18) and (2, -14)
3. (-2,18) and (2, -14)
4. -2,18) and (-2, -14)

14. What is the first derivative of y = arc sin 3x