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Unformatted text preview: rabbani (tar547) Homework01 Fouli (58395) 1 This printout should have 21 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points Rationalize the numerator of x + 4 x 2 x . 1. 6 x ( x + 4 + x 2) 2. 2 x x + 4 + x 2 3. 2 x ( x + 4 + x 2) 4. 6 x ( x + 4 x 2) 5. 6 x x + 4 x 2 002 10.0 points Which, if any, of the following statements are true when a, b are real numbers? A. For all positive a and b , a + b = radicalBig a + 2 ab + b . B. For all positive a and b , a b a + b = a b . C. For all a and b , radicalBig ( a + b ) 2 =  a + b  . 1. all of them 2. A and C only 3. A and B only 4. none of them 5. B and C only 6. C only 7. B only 8. A only 003 10.0 points Find the domain of the function f ( x ) = x + 2 x 3 . 1. domain = { x : x 2 } 2. domain = { x : x 2 , x negationslash = 3 } 3. domain = { x : x 2 , x negationslash = 3 } 4. domain = { x : x > 2 , x negationslash = 3 } 5. domain = { x : x 2 } 6. domain = { x : x < 2 , x negationslash = 3 } 004 10.0 points Simplify the expression f ( x ) = 1 + 2 x 3 5 + 40 parenleftBig x x 2 9 parenrightBig as much as possible. 1. f ( x ) = x + 3 x 9 2. f ( x ) = x 3 x 9 3. f ( x ) = 1 5 parenleftBig x + 3 x + 9 parenrightBig 4. f ( x ) = x 3 2 x 9 rabbani (tar547) Homework01 Fouli (58395) 2 5. f ( x ) = 1 5 parenleftBig x + 3 2 x + 9 parenrightBig 6. f ( x ) = 1 5 parenleftBig x 3 x + 9 parenrightBig 005 10.0 points Find the xintercept of the straight line...
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 Fall '08
 JOUVE

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