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# problem2_pdf - rabbani(tar547 – Homework01 – Fouli...

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Unformatted text preview: rabbani (tar547) – Homework01 – Fouli – (58395) 1 This print-out should have 21 questions. Multiple-choice 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 x-intercept of the straight line...
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## This note was uploaded on 04/13/2010 for the course M 408 K taught by Professor Jouve during the Fall '08 term at University of Texas.

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problem2_pdf - rabbani(tar547 – Homework01 – Fouli...

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