充分必要条件

充分必要条件（英语：sufficient and necessary condition）简称为充要条件。

充分必要条件-Wikiwand Forfasternavigation,thisIframeispreloadingtheWikiwandpagefor充分必要条件. 充分必要条件 Connectedto: {{::readMoreArticle.title}} 维基百科，自由的百科全书 {{bottomLinkPreText}} {{bottomLinkText}} ThispageisbasedonaWikipediaarticlewrittenby contributors(read/edit). Textisavailableunderthe CCBY-SA4.0license;additionaltermsmayapply. Images,videosandaudioareavailableundertheirrespectivelicenses. Coverphotoisavailableunder{{::mainImage.info.license.name||'Unknown'}}license. Coverphotoisavailableunder{{::mainImage.info.license.name||'Unknown'}}license. Credit: (seeoriginalfile). 充分必要条件 Introduction 必要条件 充分条件 必要条件及充分条件 举例 参考文献 参见 {{current.index+1}}of{{items.length}} Date:{{current.info.dateOriginal||'Unknown'}} Date:{{(current.info.date|date:'mediumDate')||'Unknown'}} Credit: Uploadedby:{{current.info.uploadUser}}on{{current.info.uploadDate|date:'mediumDate'}} License:{{current.info.license.usageTerms||current.info.license.name||current.info.license.detected||'Unknown'}} License:{{current.info.license.usageTerms||current.info.license.name||current.info.license.detected||'Unknown'}} ViewfileonWikipedia Suggestascoverphoto Wouldyouliketosuggestthisphotoasthecoverphotoforthisarticle? Yes,thiswouldmakeagoodchoice No,nevermind Thankyouforhelping! Yourinputwillaffectcoverphotoselection,alongwithinputfromotherusers. Listentothisarticle Thanksforreportingthisvideo! {{result.lang}} {{result.T}} Nomatchingarticlesfound Searchforarticlescontaining:{{search.query}} Ohno,there'sbeenanerror [email protected] Letusknowwhatyou'vedonethatcausedthiserror,whatbrowseryou'reusing,andwhetheryouhaveanyspecialextensions/add-onsinstalled. Thankyou!