Cov lus tseeb ntawm Biconditional yog dab tsi?
Cov lus tseeb ntawm Biconditional yog dab tsi?

Video: Cov lus tseeb ntawm Biconditional yog dab tsi?

Video: Cov lus tseeb ntawm Biconditional yog dab tsi?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
Anonim

Pab koj nco txog cov lus tseeb rau cov nqe lus no, koj tuaj yeem xav txog cov hauv qab no: Cov xwm txheej, p implies q, yog cuav thaum pem hauv ntej muaj tseeb tab sis sab nraub qaum yog cuav. Txwv tsis pub nws muaj tseeb. Cov biconditional , p iff q, muaj tseeb thaum twg ob nqe lus muaj tib yam qhov tseeb tus nqi.

Kuj nug, qhov tseeb tus nqi ntawm ib nqe lus Biconditional yog dab tsi?

Lus txhais: A biconditional nqe lus txhais tau tias yog muaj tseeb thaum twg ob qhov chaw muaj tib yam tus nqi tseeb . Cov biconditional tus neeg teb xov tooj yog denoted los ntawm ob lub taub hau xub. Cov biconditional p q sawv cev "p yog thiab tsuas yog q," qhov twg p yog qhov kev xav thiab q yog qhov xaus.

Tsis tas li ntawd, tus xub txhais li cas hauv cov lus tseeb? Nws yog ib lub cim uas txuas ob txoj kev tawm tswv yim nyob rau hauv cov ntsiab lus ntawm propositional logic (thiab nws extensions, first-order logic , thiab lwm yam). Cov qhov tseeb rooj ntawm → txhais tau tias p → q yog cuav yog tias p yog tseeb thiab q yog cuav.

Ib sab saum toj no, lub rooj tseeb siv rau dab tsi?

A qhov tseeb rooj yog lej rooj siv rau txiav txim siab seb cov lus sib xyaw puas muaj tseeb lossis cuav. Hauv ib qhov tseeb rooj , txhua nqe lus feem ntau yog sawv cev los ntawm ib tsab ntawv los yog hloov pauv, xws li p, q, lossis r, thiab txhua nqe lus kuj muaj nws tus kheej sib txuas hauv kab ntawv. qhov tseeb rooj uas teev txhua qhov ua tau qhov tseeb tus nqi.

Ib qho piv txwv ntawm Biconditional nqe lus yog dab tsi?

Biconditional Nqe Lus piv txwv Cov biconditional nqe lus rau ob pawg no yuav yog: Lub polygon tsuas muaj plaub sab yog thiab tsuas yog tias lub polygon yog plaub fab. Lub polygon yog ib lub quadrilateral yog thiab tsuas yog tias lub polygon tsuas muaj plaub sab.

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