Question: Please Help! A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that Cephei Joe is a star for which the

Please Help!

A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that Cephei Joe is a star for which the interval between times of maximum brightness is 5.6 days. Its average brightness is 3.1 and the brightness changes by +/-0.5. Using this data, we can construct a mathematical model for the brightness of Cephei Joe at time t, where t is measured in days: B(t) = 3.1 + 0.5 sin(2nt/5.6) (a) Find the rate of change of the brightness after t days. Rate of change = (b) Find the rate of increase after one day. Rate of increase =

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