A trigonometric function of the form f(x) = sin x has been transformed to have a maximum at 6.5 and a minimum at 2.5. The

Question

A trigonometric function of the form f(x) = sin x has been transformed to have a
maximum at 6.5 and a minimum at 2.5. The equation of the new function would be:
a) f(x) = 9 sin x
b) f(x) = 2 sin x + 4.5
c) f(x) = 4.5 sin 2x
d) f(x) = sin x + 9

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