A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval

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A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval

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A Cepheid Variable Star Is A Star Whose Brightness Alternately Increases And Decreases For A Certain Star The Interval 1
A Cepheid Variable Star Is A Star Whose Brightness Alternately Increases And Decreases For A Certain Star The Interval 1 (87.56 KiB) Viewed 22 times
A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval between times of maximum brightness is 4.6 days. The average brightness of this star is 4.0 and its brightness changes by ±0.55. Using this information, the brightness of the star at time t, where t is measured in days, has been modeled by the function dB dt (a) Find the rate of change of the brightness at time t days. 2πt 4.6 = B(t) = 4.0+ 0.55 sin (276). 16(67) Cos 46 (b) Find the rate of change of brightness at time t = 1 day. dB X dt = 0.04865
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