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Texas Tech University
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TSI 0320 Name: Quiz 2 Answer each question completely. You MUST show work to receive credit. Please circle or box your final answer. 1. State domain and range of the relation ((2, 1), (a, b), (3, 7.5), (.33, .66)) 2. Determine whether relation is a function ((1, 2), (5, 3), (6, 7), (6, 9)) Not a function, because x = 6 has 2 different values for y, 7 and 9. A function has only one y value for each x value. 3. Determine the information based on the graph: Part a. Domain: Range: Part b. Find f (−1) and f (x) = 4 Is f (1) positive or negative? 1 4 is outside the range of the function 5. Composition of functions: f (x) = 2x − 3 and g(x) = 3x2 + 1 Find: f (g(x)) f (g(1)) 6. Composition of functions: f (x) = 5x − 6 Find: f (f (x)) f (f (0)) 7. Inverse functions: Find inverse function of f (x) = x3 + 5 8. Inverse functions: √ Find inverse function of g(x) = 3x − 7 9. Graph q ...
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