Mathematics
Senior High
まるで囲んだところからまるで囲んだところまでの式変形のがわからないです。どなたか解説お願いします。
(2) (i) f(0)=|0-1|+2=|-1一+2=3
f(2)=|2-1|+2=1+2=3
f(4)=|4-1|+2=3+2=5
() 0Sz%3 より,-1Sx-122
よって,0<le-1|s2
. 2<|2-1|+2<4
よって、値域は,2<f(x)ハ4
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