Dab tsi yog cov cuab yeej ntawm kev ntxiv?
Dab tsi yog cov cuab yeej ntawm kev ntxiv?

Video: Dab tsi yog cov cuab yeej ntawm kev ntxiv?

Video: Dab tsi yog cov cuab yeej ntawm kev ntxiv?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
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Cov khoom ntawm Ntxiv . Muaj plaub lej khoom uas koom nrog ntxiv . Cov khoom yog cov commutative, associative, additiveidentity thiab distributive khoom . Kev sib txuas lus vaj tse : Thaum ob tus lej ntxiv, cov lej yog tib yam tsis hais qhov kev txiav txim ntawm qhov ntxiv. Piv txwv li 4 + 2 = 2 + 4.

Dhau li ntawm no, dab tsi yog cov khoom sib txuas ntawm qhov sib ntxiv?

Yooj yim muab, nws hais tias cov lej tuaj yeem muab ntxiv rau hauv ib qho kev txiav txim, thiab koj tseem yuav tau txais cov lus teb tib yam. Piv txwv li, yog tias koj ntxiv ib thiab ob ua ke, tus commutative khoom ntawm ntxiv hais tias koj yuav tau txais tib lo lus teb seb koj areadding 1+2 los yog 2+1.

Tsis tas li ntawd, cov khoom ntawm qhov sib ntxiv thiab qhov rho tawm yog dab tsi? Muaj plaub (4) qhov yooj yim khoom ntawm cov zauv: uas yog; commutative, associative, distributive thiab tus kheej. Cov no khoom tsuas yog siv rau kev ua haujlwm ntawm ntxiv thiab kev sib npaug. Qhov ntawd txhais tau tias rho tawm thiab kev faib tsis muaj cov no khoom builtin.

Yog li ntawd, dab tsi yog ib qho piv txwv ntawm cov cuab yeej ntxiv ntawm kev sib npaug?

Cov additive khoom ntawm vaj huam sib luag hais tias yog tus nqi tib yam ntxiv rau ob sab ntawm ib qho kev sib npaug, ces tus kev sib npaug tseem muaj tseeb. Cia a, b, thiab c yog cov lej tiag, uas muaj cov lej sib piv (piv txwv li, 0, -7, thiab 2/3) thiab cov lej tsis sib xws (piv txwv li, pi thiab lub hauv paus square ntawm 5).

Dab tsi yog qhov khoom faib khoom hauv lej?

Cov faib khoom yog ib qho ntawm feem ntau siv cov khoom hauv lej . Feem ntau, lo lus no hais txog tus faib khoom ntawm kev sib npaug uas hais tias cov. Txhais: The faib khoom cia koj muab cov lej sib npaug los ntawm kev sib faib txhua qhov ntxiv sib cais thiab tom qab ntawd ntxiv cov khoom.

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