9. 1) Find the period, amplitude, and some key points of the function f(x) = 2 cos 2x-1 2n); (0 x de 吡. Y e 2) Sketch the graph of the function f(x). 2 20m

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Q: 4.2 Given g(x) = ) = cos z + sin for 0 <<, find the value of f(x + 1)dg(x). END

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Q: - 19. Is f (x) = sinx a periodic function if so, find its period ?

A: Introduction :

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Q: 3.3. Consider the functions: f(x) = sin(x – 30°) %3D g(x) = cos x 3.3.1. Write down the period of g.…

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