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arturo200
21.11.2019 •
Mathematics
1. find the phase shift of the function y = 5cos(2x + pi/2).
2. which of the following functions has a maximum y value of 4?
y = 4cosx
y = cos4x
y = cosx + 4
y = cos(x + 4)
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Ответ:
see explanation
Step-by-step explanation:
1
The cosine function in standard form is
y = acos(bx + c)
where a is the amplitude, period =
and
phase shift = -![\frac{c}{b}](/tpl/images/0384/4616/23f9a.png)
here b = 2 and c =
, thus
phase shift = -
= - ![\frac{\pi }{4}](/tpl/images/0384/4616/3021f.png)
2
the amplitude = | a |
which has a maximum of a and a minimum of - a
y = 4cosx ← has a maximum value of 4
Ответ:
dfg
Step-by-step explanation:
dfg