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e Choose the period of the function y = sin 3x + 2 cos 2x from the following. e

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e What is the domain of the function f(x) = cos x? e

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e Find the range of the function f(x) = cos x2. e

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e Find the domain of the function f(x) = 4x  cos x. e

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e Choose the equations of the two lines, between which the graph of the function y = 2x + sin x oscillates. e

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e Choose the two lines, between which the graph of the function y = 2  x + cos x oscillates. e

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e The graph of the function f(x) = 3 + x + cos 3x oscillates between two parallel lines. Choose the equations of these parallel lines. e

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e Find the period of the function y = 2 sin(3x + 1)  cos(5x  1). e

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e Find the period for the function y = 2 cos 3x + sin 2x. e

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e Sketch the graph of the function y = cos 5x + cos 2x showing one period. Then find the period. e

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e Determine whether the function f(x) = x cos 4x exhibits damped oscillations. e

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e Determine whether the function f(x) = 2 sin 2x  cos x is sinusoid or not. e

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e What is the period of the function f (x) =  cos x ? e

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