Video: Puas yog multiplication commutative lossis associative?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv lej, cov koom nrog thiab kev sib txuas lus cov khoom yog cov cai siv rau ntxiv thiab kev sib npaug uas ib txwm muaj. Cov koom nrog Cov cuab yeej hais tias koj tuaj yeem rov muab cov lej rov qab thiab koj yuav tau txais tib lo lus teb thiab cov kev sib txuas lus vaj tse hais tias koj tuaj yeem txav tus lej nyob ib puag ncig thiab tseem tuaj txog ntawm tib lo lus teb.
Tsuas yog li ntawd, qhov txawv ntawm kev sib koom ua ke thiab kev sib txuas lus yog dab tsi?
Vim li ntawd, nws yog ib qho tseem ceeb kom nkag siab txog qhov qhov sib txawv ntawm ob tug. Cov kev sib txuas lus Cov cuab yeej cuam tshuam txog qhov kev txiav txim ntawm qee qhov kev ua lej. Cov koom nrog Cov cuab yeej, ntawm qhov tod tes, txhawj xeeb txog kev sib koom ua ke ntawm cov khoom hauv kev ua haujlwm. Qhov no tuaj yeem pom los ntawm qhov sib npaug (a + b) + c = a + (b + c).
Ib yam li ntawd, yog vim li cas qhov kev sib tw sib tw? Cia peb kawm! Dab tsi yog qhov kev sib txuas lus cov cuab yeej ntawm kev sib npaug ? Kev sib txuas lus los ntawm lo lus "commute" uas txhais tau hais tias mus ncig los yog mus ncig. Raws li cov kev sib txuas lus cov cuab yeej ntawm kev sib npaug , hloov qhov kev txiav txim ntawm tus lej peb kev sib npaug , tsis hloov cov khoom.
Nyob rau hauv no hais txog, yog nruab nrab commutative thiab associative?
Koj muaj nruab nrab . Nruab nrab ntawm ob tus lej siv ob tus lej thiab ntxiv rau lawv. Qhov ntawd yog koom nrog thiab kev sib txuas lus , qhov ntxiv yog. Thaum koj faib nws los ntawm ob, nws tsis yog lawm koom nrog , tab sis nws tseem kev sib txuas lus.
Vim li cas thiaj tuaj yeem koom nrog thiab sib koom ua ke tsuas yog ua haujlwm nrog ntxiv thiab sib npaug?
KEV PAB CUAM: Peb ua tau commute thaum peb ntxiv los yog muab ntau ntau , mas we ua tau tsis mus los yog "hloov" qhov kev txiav txim ntawm cov lej thaum peb faib lossis rho tawm. Cov Associative Txoj cai tso cai rau koj txav cov kab lus ntev npaum li cov lej ua tsis txav. Raws li nrog cov kev sib txuas lus law, ev yuav ua haujlwm nkaus xwb rau sib ntxiv thiab sib npaug.
Pom zoo:
Puas yog Phosphorus yog hlau lossis tsis yog hlau?
Phosphorus yog cov hlau tsis muaj hlau uas nyob hauv qab nitrogen hauv pawg 15 ntawm lub sijhawm. Cov khoom no muaj nyob rau hauv ntau hom, uas yog dawb thiab liab yog qhov zoo tshaj plaws paub. Dawb phosphorus yog twv yuav raug hu ntau exciting ntawm ob
Puas yog beryllium yog hlau lossis nonmetal lossis metalloid?
Beryllium yog hlau. Nws yog nyob rau hauv alkaline ntiaj teb hlau pawg nyob rau hauv lub periodic lub rooj thiab muaj tshuaj thiab lub cev muaj zog zoo ib yam li cov magnesium thiab txhuas, tab sis muaj ib tug ntau dua melting point tshaj ob qho tib si
Puas yog carbon hlau lossis nonmetal lossis metalloid?
Carbon muaj 4 electrons nyob rau hauv nws lub valence plhaub uas ua rau nws ib tug metalloid tab sis feem ntau nws yog suav hais tias yog tsis yog hlau
Puas yog malleable hlau lossis nonmetal lossis metalloid?
Hlau, Metalloids, thiab Nonmetals. Cov ntsiab lus tuaj yeem faib ua hlau, nonmetals, lossis metalloids. Cov hlau yog cov khoom siv hluav taws xob zoo ntawm cov cua sov thiab hluav taws xob, thiab tuaj yeem ua tau zoo (lawv tuaj yeem muab hammered rau hauv cov ntawv) thiab ductile (lawv tuaj yeem kos rau hauv cov hlau). Cov metalloids yog nruab nrab hauv lawv cov khoom
Dab tsi yog lub ntsiab lus ntawm associative cuab yeej hauv kev sib npaug?
Lus Txhais: Cov cuab yeej sib koom ua ke hais tias koj tuaj yeem ntxiv lossis sib ntxiv txawm tias cov lej tau muab faib li cas. Los ntawm 'pab pawg' peb txhais tau tias 'koj siv kab lus li cas'. Hauv lwm lo lus, yog tias koj ntxiv lossis sib faib nws tsis muaj teeb meem qhov twg koj muab cov kab lus. Ntxiv ib co kab lus nyob qhov twg koj nyiam