Answer:
2π/7
Explanation:
A cosine wave is:
y = A cos(2π/T x + B) + C
where A is the amplitude,
T is the period,
B is the horizontal shift,
and C is the vertical shift.
In this case:
7 = 2π/T
T = 2π/7
The period the la function is with the formula that will be explained below
The period is calculated with this formula:
2 π
b
The absolute value is the distance between a number and zero, therefore the distance between zero and 7 is therefore 7; therefore we finally have:
Periodo:
7
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