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Unformatted text preview: . (ii) Find the roots of f ( x ) = x 3 9 x + 28 . Solution. 4 , 2 i 3. (iii) Find the roots of f ( x ) = x 3 24 x 2 24 x 25 . Solution. 17 , 1 2 i 3 2 . 5.2 (i) Find the roots of f ( x ) = x 3 15 x 4 using the cubic formula. Solution. g = 3 p 2 + 121 and h = 3 p 2 121 . (ii) Find the roots of f ( x ) using the trigonometric formula. Solution. 4 , 2 3. 5.3 Find the roots of f ( x ) = x 3 6 x + 4 . Solution. 2 , 1 3 . 5.4 Find the roots of x 4 15 x 2 20 x 6 . Solution. 3 , 1 , 2 6 ....
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This note was uploaded on 12/21/2011 for the course MAS 4301 taught by Professor Keithcornell during the Fall '11 term at UNF.
 Fall '11
 KeithCornell

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