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Let f(x) be the smallest nonnegative number y such that x - y is an integer.  Compute -2.2 + f(-2.2).

 Jun 17, 2020
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f(-2.2) = -2.2 - y = integer

We're trying to get rid of the fractional part 0.2. Since y > 0, y = 0.8

-2.2 + 0.8 = -1.4

 Jun 17, 2020

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