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四种命题的概念

> 下列结论错误的个数是（　　）（1）命题“若p，则q”与命题“若¬q，则¬p”互为逆否命题；（2）“若am 2＜bm 2，则a＜b”的逆命题为真命题；（3）命题p：∀x∈[0，1]，e x≥1，命题q：∃x∈R，x 2+x+1＜0，则p∨q为真；（4）若实数x，y∈[0，1]，则满足x 2+y 2＞1的概率为 π 4 ． A．0 B．1 C．2 D．3

问题：

发布时间：2024-09-09

下列结论错误的个数是（　　）
（1）命题“若p，则q”与命题“若¬q，则¬p”互为逆否命题；
（2）“若am ²＜bm ²，则a＜b”的逆命题为真命题；
（3）命题p：∀x∈[0，1]，e ^x≥1，命题q：∃x∈R，x ²+x+1＜0，则p∨q为真；
（4）若实数x，y∈[0，1]，则满足x ²+y ²＞1的概率为

π

4

．

A．0 B．1 C．2 D．3

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