The website uses cookies. By using this site, you agree to our use of cookies as described in the Privacy Policy.
I Agree
blank_error__heading
blank_error__body
Text direction?

判断推理之假言命题必背15条公式 - 知乎

Markup
(220)
Measure
Measure
Related Notes
Get a free MyMarkup account to save this article and view it later on any device.
Create account

End User License Agreement

Summary | 4 Annotations
5个前→后(充分条件假言命题的标志词):如果……那么(就)……;只要……就……;若……就(则)……;要想……必须……;一……就……;
2020/09/24 07:11
只有……才……;除非……否则不……;……是……的基础(必要的);不……就不……;
2020/09/24 07:11
除非……否则……;……除非……:……否则……:
2020/09/24 07:11
假言命题的逆否命题(以真求真):A→B 的逆否命题是非B→非A。假言命题的矛盾命题(以真求假):A→B的矛盾命题是A且非B。
2020/09/24 07:12