SOLUTION: Variable stars are ones whose brightness varies periodically. The brightness of a certain star is modeled by the function
b(t) = 8.1 − 2.2 cos (pi/155)t
----
Not clear.
C
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Question 997592: Variable stars are ones whose brightness varies periodically. The brightness of a certain star is modeled by the function
b(t) = 8.1 − 2.2 cos (pi/155)t
----
Not clear.
Clarify the cosine.
where t is measured in days.
(a) Find the period.
days
(b) Find the maximum and minimum brightness.
(minimum)
(maximum)
(c) Graph the function b.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Variable stars are ones whose brightness varies periodically. The brightness of a certain star is modeled by the function
b(t) = 8.1 − 2.2 cos (pi/155)t
----
Not clear.
Clarify the cosine.
pi/155 is a constant.
where t is measured in days.
(a) Find the period.
days
(b) Find the maximum and minimum brightness.
(minimum)
(maximum)
(c) Graph the function b.
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