mac1147_review_1_ans

mac1147_review_1_ans - Answers - Review Init I 7 12 (b) 2...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Answers - Review Init I 1. (a) 1 x + (b) 82 π (c) 13 37 r 2. (a) 7 2 (b) 12 13 3. (a) Natural numbers: 1 4 15 ,16 5 ⎧⎫ ⎨⎬ ⎩⎭ (b) Integers: 1 4 3 01 5 ,8 ,, 1 6 35 (c) Rational numbers: 1 4 3 5 1 , 1 6 , 0 . 6 2 (d) Irrational numbers: { } 2, (e) Real numbers: 1 4 3 5 1 , , 8, , ,16 ,0.6 2 . 4. (a) 2 4 1 x x (b) () 2 2 2 2 xx + 5. (a) ( ) 22 2( 2 )5 x +− (b) ( )( )( ) 42 12 1 x x −+ (c) ( )( )( ) 2 3 xxx + (d) ( )( ) 421 4 21 x x ++ 6. 65 32 y y ; Domain: 12 , 23 yy ≠− 7. (a) ( ) 2 41 o r 4 4 x x −− ; Domain: { } 1 \ (b) 1; Domain: 0, , x ∈≠≠ \ 8. (a) {} 2 ; Domain: 0,2,3 3 x x (b) 2 3 Domain: 0, 1,1 1 x x (c) 2 1 1 x x x x 9. (a) 2 5 y x (b) x y x y + (c) 4 2 16 9 x y 10. (a) 33 2 5 2 2 2 x yz (b) ( ) x xy + (c) 10 8 + (d) 27 12 x 11. (a) 4 x (b) 72 (c) 0 (d) cannot be simplified 12. (a) 32 3 (b) 256 13. (a) 3 aaa (b) 54 3 2 355 3 x xxxx +−+ (c) 5 x + + (d) 42 94 86 4 + (e) 83 4 2 7 14. (a) (empty) (b) 2 5 15. (a) 8 i (b) 100 (c) 1 16. (a) 6 i (b) 10 10 i (c) 1 i − + (d) 11 8 13 13 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
17. (a) { } 1, i ±± (b) { } 5, 3 (c) 14 1 4 ± ⎩⎭ (d) 33 22 i ± 18. 3 8 19. Solve the quadratic equation by completing the square: 2 44 3 5 0 xx −= . STEPS: (1) 2 35 0 4 −− = (2) 2 35 4 (3) 2 13 51 444 −+ = + (4) 2 1 9 2 x ⎛⎞ = ⎜⎟
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/07/2011 for the course MAC 1147 taught by Professor German during the Summer '08 term at University of Florida.

Page1 / 2

mac1147_review_1_ans - Answers - Review Init I 7 12 (b) 2...

This preview shows document pages 1 - 2. Sign up to view the full document.

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