Question

Find the maximum and minimum values of the function.
Y=-cos8x

Answer 1

Answer A.

Explanation:

Maximum value = 1

Minimum value = -1

Answer 2

A

Explanation:

Given a sinusoidal function (sine function or cos function) in the form

y = A Cos (Bx), we can say that A is the amplitude.

Amplitude defines the function's maximum and minimum.

The maximum of this form of function is A and the minimum is -A.

The function given is y = -Cos(8x), so A is -1

Thus, maximum value is 1 and minimum value is -1.

Correct answer is A