Yuav ua li cas koj nrhiav tau tus sau ntawm ib tug algebraic muaj nuj nqi?
Yuav ua li cas koj nrhiav tau tus sau ntawm ib tug algebraic muaj nuj nqi?

Video: Yuav ua li cas koj nrhiav tau tus sau ntawm ib tug algebraic muaj nuj nqi?

Video: Yuav ua li cas koj nrhiav tau tus sau ntawm ib tug algebraic muaj nuj nqi?
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Cov sau npe ntawm a muaj nuj nqi yog cov txheej txheem ntawm tag nrho cov tau inputs rau lub muaj nuj nqi . Piv txwv li, lub sau npe ntawm f(x) = x² yog tag nrho cov lej tiag, thiab cov sau npe ntawm g(x) = 1/x yog txhua tus lej tiag tsuas yog x = 0.

Ntawm no, ua li cas koj thiaj nrhiav tau lub luag haujlwm ntawm kev ua haujlwm?

Rau hom no muaj nuj nqi , cov sau npe yog txhua tus lej tiag. A muaj nuj nqi nrog ib feem nrog qhov sib txawv ntawm tus denominator. Yuav nrhiav tau sau npe ntawm hom no muaj nuj nqi , teem lub hauv qab sib npaug zos rau xoom thiab tsis suav tus x tus nqi koj pom thaum koj daws qhov sib npaug. A muaj nuj nqi nrog ib tug sib txawv nyob rau hauv ib tug radical kos npe.

Qhov thib ob, koj pom qhov ua haujlwm ntawm daim duab li cas? Kev ntsuas kab ntsug tuaj yeem siv los txiav txim siab seb a daim duab sawv cev a muaj nuj nqi . Ib kab ntsug suav nrog tag nrho cov ntsiab lus nrog tus nqi x tus nqi. Tus nqi y ntawm qhov taw tes uas kab ntsug hla a daim duab sawv cev rau qhov tso zis rau qhov input x tus nqi.

Ntxiv mus, koj yuav nrhiav tau qhov sau thiab ntau yam ntawm kev ua haujlwm li cas?

Lwm txoj hauv kev los txheeb xyuas cov domain thiab ntau yam ntawm muaj nuj nqi yog siv graphs. Vim lub sau npe hais txog cov txheej txheem ntawm cov khoom siv tau, cov sau npe ntawm ib daim duab muaj tag nrho cov input qhov tseem ceeb qhia nyob rau hauv x-axis. Cov ntau yog cov txheej txheem ntawm cov txiaj ntsig tau tso tawm, uas tau qhia ntawm y-axis.

Dab tsi yog qhov sau hauv algebra?

Cov sau npe ntawm ib qho kev ua haujlwm yog qhov ua tiav ntawm cov txiaj ntsig tau ntawm qhov hloov pauv ywj pheej. Hauv lus Askiv dawb, qhov txhais no txhais tau tias: The sau npe yog cov txheej txheem ntawm txhua qhov ua tau x-tus nqi uas yuav ua rau muaj nuj nqi "ua haujlwm", thiab yuav tso tawm cov txiaj ntsig tiag.

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