Question

I need the answer please

Answer 1

The graphed cosine function can either be:

cos(x + pi) or cos(x - pi).

Which is the equation of the graphed function?

We know that this function is a cosine function with a phase shift, so the general form is:

f(x) = cos(x + P).

Where P is the phase shift.

In the graph we can see that when x = 0, f(0) = -1

And we know that cos(pi) = -1 = cos(-pi)

Then we must have that:

f(0) = cos(P) = -1

By what we wrote above, we know that P can be either -pi or pi (because of the parity of the cosine). Let's say that P = pi, then the cosine function is:

f(x) = cos(x + pi).

If you want to learn more about cosine functions:

brainly.com/question/8120556

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