What is the cosine equation of the function shown? Enter your answer by filling in the boxes. Enter any phase shift as its smallest multiple from the fundamental period.
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Answer:
See the attached figure.
Step-by-step explanation:
the general equation of cosine function is
f(x) = A cos (x + B) + C
Where:
A is the amplitude
B is the horizontal shift
C is the vertical shift
For the given figure
Maximum = 9, minimum = -1
A = (maximum - minimum)/2 = (9 - -1)/2 = 10/2 = 5
Vertical shift = maximum - A = 9 - 5 = 4
The maximum occurs at x = -π/4, and
for the original function (without shift), the maximum occurs at x = 0
So, the horizontal shift = 0 - (-π/4) = π/4