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一道美国数学题,主要看不太懂.关于建立function的,请教大师.财富不多,已倾尽全囊.Avariablestarisonewhosebrightnessalternatelyincreasesanddecreases.Foronesuchstar,thetimebetweenperiodsofmaximumbrightness
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一道美国数学题,主要看不太懂.关于建立function的,请教大师.财富不多,已倾尽全囊.
A variable star is one whose brightness alternately increases and
decreases. For one such star, the time between periods of maximum
brightness is 6.0 days, the average brightness (or magnitude) of the star is 5.0, and its brightness varies by ±0.25 magnitude. Find a function that models the brightness of the star as a function of time (in days), t. (Assume that at t = 0 the brightness of the star is 5.0 and that it is increasing.)
求解析和解答...不是goole翻译~~
A variable star is one whose brightness alternately increases and
decreases. For one such star, the time between periods of maximum
brightness is 6.0 days, the average brightness (or magnitude) of the star is 5.0, and its brightness varies by ±0.25 magnitude. Find a function that models the brightness of the star as a function of time (in days), t. (Assume that at t = 0 the brightness of the star is 5.0 and that it is increasing.)
求解析和解答...不是goole翻译~~
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所谓变星,就是指亮度一会儿增大一会儿减小的星体.假设有一颗变星到达最大亮度的周期是6.0天,其亮度的平均值为5.0,其亮度的变化幅度为±0.25,请对该变星的亮度建模,将其表述成以时间t（单位：天）的函数.（假定当其亮...
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