Dab tsi yog qhov zeros ntawm kev ua haujlwm Dab tsi yog qhov sib txawv?
Dab tsi yog qhov zeros ntawm kev ua haujlwm Dab tsi yog qhov sib txawv?

Video: Dab tsi yog qhov zeros ntawm kev ua haujlwm Dab tsi yog qhov sib txawv?

Video: Dab tsi yog qhov zeros ntawm kev ua haujlwm Dab tsi yog qhov sib txawv?
Video: Nkauj Hmoob Nplog mus yuav Txiv Suav raug ua Qhov Quav (HMOOB SIAB PHEM EP4) 2024, Kaum ib hlis
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Tus naj npawb ntawm lub sij hawm ib qho tseem ceeb tshwm sim nyob rau hauv daim ntawv factored ntawm qhov sib npaug ntawm ib tug polynomial yog hu ua ntau ntau . Qhov zero cuam tshuam nrog qhov xwm txheej no, x = 2, muaj ntau ntau 2 vim qhov xwm txheej (x−2) tshwm sim ob zaug. X-intercept x = −1 yog qhov rov ua dua ntawm cov khoom (x + 1) 3 = 0 (x + 1) 3 = 0.

Ib yam li ntawd, tib neeg nug, dab tsi yog qhov ntau ntawm xoom?

A xoom muaj ib " ntau ntau ", uas yog hais txog tus naj npawb ntawm lub sij hawm uas nws muaj feem cuam tshuam tshwm sim nyob rau hauv lub polynomial. Piv txwv li, lub quadratic (x + 3) (x - 2) muaj xoom x = -3 thiab x = 2, txhua qhov tshwm sim ib zaug.

Ib tug kuj yuav nug, ua li cas koj paub yog hais tias ib tug multiplicity yog khib los yog txawm? Yog tus ntau ntau yog khib , daim duab yuav hla tus x-axis ntawm tus xoom ntawd. Ntawd yog, nws yuav hloov sab, lossis nyob rau sab nraud ntawm x-axis. Yog tus multiplicity yog txawm , daim duab yuav kov x-axis ntawm tus xoom ntawd. Ntawd yog, nws yuav nyob ntawm tib sab ntawm lub axis.

Cov neeg kuj nug, dab tsi yog qhov multiplicity ntawm ib tug function?

Los ntawm Wikipedia, dawb encyclopedia. Hauv lej, the ntau ntau ntawm ib tug tswv cuab ntawm ib tug multiset yog tus naj npawb ntawm lub sij hawm nws tshwm nyob rau hauv lub multiset. Piv txwv li, tus naj npawb ntawm lub sij hawm ib tug muab polynomial sib npaug muaj ib lub hauv paus ntawm ib tug muab point yog tus ntau ntau ntawm lub hauv paus.

Yuav ua li cas koj pom qhov zeros ntawm ib txoj haujlwm?

Nrhiav zero a muaj nuj nqi txhais tau tias nrhiav lub point (a, 0) qhov twg cov duab ntawm lub muaj nuj nqi thiab y-intercept kev sib tshuam. Rau nrhiav tus nqi ntawm a los ntawm qhov point (a, 0) teeb lub muaj nuj nqi sib npaug rau xoom thiab ces daws rau x.

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