Q. Find the critical and extreme values of the following functions and check whether the extreme values are maximum / minimum or point of inflection: 1. Y= x3 - 12x2 + 36x + 8 20. Y= x' - 6x2 + 12x - 6 2. Y= - 2x3 + 8x + 7 21. Y= x3 - 6x -7 3. Y=5x3 + x 22. Y=2x2 - 5x - 12 4. Y= 3x- - 6x + 2 23. Y= 2x - 8x3 + 12x 5. Y- x'- 3x + 5 24. Y= =x3 -x-3x + 1 6. Y= =x3 -x' + x+ 10 7. Y=-x3 +4.5x2 -6x +6 8. Y=x+ = X 9. Y=4x2 -x 10. Y= x'- 3x3 +2 11. Y- x x' - 3x2 + 5x + 3 12. Y= x3 + 6x2 13. Y= x- + 2 14. Y= x3 + 4x 15. Y= x- x-+ 2 16. Y= 4x - x2 17. Y= .= x3 - 2x2 + 5x - 2 18. Y- -2+12x - x' 19. Y= x' - 6x3 + 9x