MA 103 Midterm Exam Review Sheet - FALL 2010

MA 103 Midterm Exam Review Sheet - FALL 2010 - MONTGOMERY...

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MONTGOMERY COLLEGE GERMANTOWN CAMPUS MA 103 Midterm Exam Review Sheet (FALL 2010) This is a review sheet. The actual examination will be different. 1. Which of the following graphs i) Represents a function? Give a reason for your answer. ii) Represents a 1-1 function? Give a reason for your answer. a) -4 -2 0 2 y -4 -2 2 4 x b) -40 -20 0 20 -4 -2 2 4 x c) -4 -3 -2 -1 0 1
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. 2. Which of the following ordered pairs is a solution of the equation 2 2 1 x x y - - = , and which are not. Explain your answer. ( 29 2 , 1 - ( 29 7 , 2 - ( 29 1 , 0 ( 29 3 , 1 3. Which of the following relations represents a function, and which does not. Give a reason for your answer. A = {(2, 5),(4, 7),(7, 9),(8, 11)} B = {(1, 3),(2, 3),(2, 6),(3, 8)} 4. For 4 ) ( 2 - = x x f find and simplify ) 2 ( + t f . 5. Solve each equation for x . a) 14 5 2 = - x x b) 0 66 7 5 2 = - + x x c) 0 3 2 2 3 = - - x x x d) 0 16 3 = - x x 6. The following is a graph of f . Sketch a graph of the equation 2 ) 1 ( + - = x f y on the same set of axes. 7. Simplify the following. a) 2 2 2 24 16 x x x - - - b) x x - - 5 125 3 8. Divide and simplify. 2 2 2 4 8 6 7 18 81 a a a a a a + - - ÷ - - - 2
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9. Simplify each complex fraction.
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