Question

Determine the niinimum and maximum value of the following trigonometric

function.
f(x) = 5 cos 3x – 3

Answer 1

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Answer:

maximum: +2

minimum: -8

Explanation:

The cosine has a minimum of -1 and a maximum of +1. Then the extremes of f(x) are ...

5(±1) -3 = -3±5 = +2, -8

The maximum of f(x) is +2; the minimum is -8.