QUEST HW 7 - roberts(eer474 – HW 07 – windle –(56747...

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Unformatted text preview: roberts (eer474) – HW 07 – windle – (56747) 1 This print-out should have 7 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points Consider y = 8 9 cos x 5 a) Find the period. 1. none of these 2. π 10 3. 10 π correct 4. 8 9 5. 5 6. π 5 Explanation: The period of the function y ( x ) is T = 2 π · 5 = 10 π . 002 (part 2 of 2) 10.0 points b) Find the amplitude. 1. None of these 2. 4 9 3. 9 8 4. 8 9 correct 5. 5 6. 8 45 Explanation: The function y ( x ) is of the general form A cos parenleftbigg 2 πt T- φ parenrightbigg , where T is the period, A is the amplitude and φ is the phase. Thus the amplitude is A = 8 9 . 003 10.0 points Consider f ( x ) = sin 7 x g ( x ) = sin(- 7 x ) Which statement best describes the relation- ship between the graphs of f and g ? 1. The graph of g is a horizontal shift to the left by 7 units of the graph of f ....
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QUEST HW 7 - roberts(eer474 – HW 07 – windle –(56747...

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