What is the range of the function $f (x) = - 4 cos (2 x - 3)$ $f(x)=-4cos(2x - 3)$ ?

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What is the range of the function $f (x) = - 4 cos (2 x - 3)$ $f(x)=-4cos(2x - 3)$ ?

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Answer 1 · 2015-02-10T03:51:48

The range is $[- 4, 4]$ $[-4,4]$ .

Since $2 x - 3$ $2x-3$ can be any real number, the range of $- 4 cos (2 x - 3)$ $-4cos(2x-3)$ can be determined by expanding the range of $cos (x)$ $cos(x)$ by a factor of $4$ $4$ .

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What is the range of the function $f (x) = - 4 cos (2 x - 3)$ $f(x)=-4cos(2x - 3)$ ?

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Impact of this question

Science

Math

Humanities

... and beyond

What is the range of the function f(x)=−4cos(2x−3)f(x)=-4cos(2x - 3)?

1 Answer

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Impact of this question

What is the range of the function $f (x) = - 4 cos (2 x - 3)$ $f(x)=-4cos(2x - 3)$ ?