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  5. なんで偽になるんですか？
Mathematics
Junior High
nana
nana

なんで偽になるんですか？

*(4) |x52→|x-1|<3
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‪ꫛꫀꪝ
‪ꫛꫀꪝ

反例 x=-2
そしたら右辺は満たすが左辺は3になるので、未満ではなくなるので、満たさない

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