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ZX-DD942FC1A2Bluebook试题5 · 第 13 题
Bluebook试题5 · 原库模块 1 · Q13 原库参考解析
\( f(t)=500(0.5)^{\frac{t}{12}} \)
The function f models the intensity of an X-ray beam, in number of particles in the X-ray beam, t millimeters below the surface of a sample of iron. According to the model, what is the estimated number of particles in the X-ray beam when it is at the surface of the sample of iron?
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