Question

CHECK MY SUPER EASY WORK FOR A QUICK MEDAL!!!

What is the amplitude, period, and phase shift of f(x) = -3 cos(4x + π) + 6?

Answer 1

I already know the amplitude is -3 and the phase shift is -pi/4, how do I find the period?

Answer 2

@mathmate @ganeshie8

Answer 3

If y = A cos(Bx + C) + D
the amplitude is |A|, the absolute value of A
the period T is:
\[\large T=\frac{2 \pi}{B}\]
the phase shift is:
\[\large \frac{C}{B}\]

You need to look again at your answers of the amplitude and the phase shift.

Answer 4

answers for*

Answer 5

@kropot72 okay so the answer for this would be amp = 3, per = pi / 2, and ps = -pi / 4, right?

Answer 6

can someone check this^, please?

Answer 7

ya looks good c:

Answer 8

thanks!!!

Answer 9

The phase shift is:
\[\large \frac{\pi}{4}\]