Question

For the function y=-1+6cos(2pi/7(x-5)) what is the minimum value?

Answer 1

It is -7 like the other person said, I just took the quiz!

Explanation:

Answer 2

The minimum value of y is -7

Explanation:

Given:
`y=-1+6\cos((2\pi)/(7)(x-5))`

We are given a cosine function.

We need to find minimum value of function.

`y=-1+6\cos((2\pi)/(7)(x-5))`

Here y is depends on cosine function.

y is minimum when cosine is minimum because y is directly proportional to cosine function.

Minimum value of cos x is -1

Therefore, For minium value of y

`\cos((2\pi)/(7)(x-5))=-1`

Minimum value of y

`y=-1+6(-1)`

`y=-7`

Hence, The minimum value of y is -7