Practice problem
Let f(x)=1xf(x) = \frac{1}{x}f(x)=x1. If ccc is a real number satisfying f(c)=4cf(c) = 4cf(c)=4c, then what is f(c5)f(\frac{c}{5})f(5c)?
10
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14
16
Type a concept, like “slope” or “photosynthesis”.