Q 21

Section 5.3 Exercises In Exercises 1-6, use the First Derivative Test to determine the 23. local'extreme values of the function, and identify any absolute extrema. Support your answers graphically. 1. y = x - x- 1 2. y = -2x3 + 6x2 - 3 3. y = 2x4 - 4x2 + 1 4. y = xel/x 5. y = xV8 - x2 6. y = 3 -1, xCo 12+1 120 In Exercises 7-12, use the Concavity Test to determine the intervals on which the graph of the function is (a) concave up and (b) concave down. 7. y = 4x3 +. 21x2+ 36.x - 20 8. y = -x + 4x - 4x + 1 24. 9. y = 2x1/5 + 3 10. y = 5 - x1/3 11. y = *