practice on functions 1 solution guide-1

practice on functions 1 solution guide-1 - New York...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
G. Lancer Page 1 New York Institute of Technology Mathematics Department M 141 Pre-Calculus Practice 1 - Solution Guide In order to conserve space and paper, the problems may not be done in proper numeric order. (1) Find the exact zeros of 42 ( ) 8 33 f x x x by factoring. 22 ( ) 8 33 0 ( 11)( 3) 0 11 0 3 0 11 3 11 3 3 : 11, 11, 3, 3 f x x x xx xi The four zeros are x x x i x i               (3) Completely factor 32 ( ) 5 7 4 6 f x x x x given that 1 i is a zero. (7) Use the Rational Zero Theorem to list all the possible rational zeros for the polynomial function 4 ( ) 4 7 10 f x x x   . 4 1 5 1 5 ,,, 2244 10 ( ) 4 7 10 4 : 1, 2, 5, 10, All the possible zeros of f x x x are factors of Factors are    With TI we find one real zero, 0.6 x  and since the other two zeros are 1  and 1 , then we can factor: ( ) 5 7 4 6 ( 0.6)( (1 ))( )) ( ) ( 0.6)( 1 )( 1 ) f x x x x x x i x i or f x x x i x i      
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
G. Lancer Page 2 (4) Find a 3 rd degree polynomial function with the zeros 23 i
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

practice on functions 1 solution guide-1 - New York...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online