yesharabaskoro
14.07.2019 •
Mathematics
What are the amplitude, period, phase shift, and midline of f(x) = −4 cos(3x − π) + 1? amplitude: −4; period: pi over 3; phase shift: x = pi over 4; midline: y = −1 amplitude: 4; period: pi over 3; phase shift: x = pi over 4; midline: y = 1 amplitude: −4; period: 2 pi over 3; phase shift: x = pi over 3; midline: y = −1 amplitude: 4; period: 2 pi over 3; phase shift: x = pi over 3; midline: y = 1?
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Ответ:
Alright, lets get started.
The standard form for cos function is
Where
A = Amplitude (positive value)
Period =
Phase shift =
Mid line or vertical shift = D
So, comparing the given function with standard
A = 4
B = 3
C=
D = 1
Means Amplitude = 4
Period =
Phase shift =
Mid line = 1
Hence the answer is last choice 4.
Hope it will help :)
Ответ:
-9-5x
Step-by-step explanation:
they aren't the same because of the variable on 5x. You can simplify the problem to -9-5x but that's about it unless it equals something.