Mathematics
Senior High
教えて欲しいです
7 x は実数とする。 次の命題の真偽を, 集合を使って調べよ。
(1) x<1⇒ x<2
グ
8
(2) x2 ²/3 ⇒ x2 ²7/
(3) 0≦x≦2-2≦x≦3
(4) -1<x<4⇒2<x<5
9 x, yに
偽を調
(1) x≦
(3) x² +
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