Maths-

General

Easy

Question

The minimum and maximum values of 3x are

- -7,7
- -23,23
- -17,17
- -15,8

Hint:

### In this question, we have to find the range of f(x). As we know, if f(x)=a sin x+ b cos x then, range of f(x), so, by using this we can find the range of f(x).

## The correct answer is: -17,17

### As we know, if f(x)=a sin x+ b cos x

Then, range of f(x)

As f(x)= 8 cos 3x - 15 sin 3x

So, range of f(x)

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