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Find the values of x for which the following functions are maximum or minimum: (i) ` x^(3)- 3x^(2) - 9x ` (ii) ` 4x^(3)-15x^(2)+12x+1` (iii) ` 1-x-x^(2)` (iv) `x^(4)-8x^(3)+22x^(2)-24x +7` (v) `(x^(2)-x+1)/(x^(2)+x+1)` |
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Answer» Correct Answer - (i) Max at x =-1, min at x = 3` "(ii) Max at x = 1/2, min at x = 2` (iii)Max at `x =- 1/2" "(iv)"Max at "x = 2,` min at x = 1, 3 (v) Min at x= 1 and max at x = - 1 |
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