Mathematics
Senior High
この変形の仕方が分かりません。どなたか教えて頂きたいです🙇♀️
(**) f(x) 0x0,
£ −n (< 0), n ≤ x
ORA
本
n (>0) Thz. k ≤ x ≤ k +1 (k = 1, 2, ..., n − 1)
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f(x) = (x − 1) + ··· + (x−k) - (x − k − 1)-(x-n)
=
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= {k − (n − k)}x+(E)
07
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