Daim duab ntawm ib qho kev sib npaug quadratic zoo li cas?
Daim duab ntawm ib qho kev sib npaug quadratic zoo li cas?

Video: Daim duab ntawm ib qho kev sib npaug quadratic zoo li cas?

Video: Daim duab ntawm ib qho kev sib npaug quadratic zoo li cas?
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Cov graph ntawm ib quadratic muaj nuj nqi yog ua U- zoo li tus nkhaus hu ua parabola. Nws tuaj yeem yog kos los ntawm plotting kev daws teeb meem rau cov kev sib npaug , los ntawm kev nrhiav lub vertex thiab siv lub axis ntawm symmetry rau cov lus xaiv cov ntsiab lus, los yog los ntawm kev nrhiav cov hauv paus hniav thiab vertex. Tus qauv qauv ntawm a quadratic equation yog.

Hais txog qhov no, daim duab ntawm lub quadratic zoo li cas?

Cov graph ntawm ib quadratic muaj nuj nqi yog ua U- zoo li tus nkhaus hu ua parabola. Kos npe rau ntawm tus coefficient a plaub fab muaj nuj nqi cuam tshuam seb lub daim duab qhib los yog down. X-intercepts yog cov ntsiab lus ntawm parabola hla lub x-axis.

Qhov thib ob, K hauv daim ntawv qauv yog dab tsi? f (x) = a(x - h)2 + k , qhov twg (h, k ) yog lub vertex ntawm lub parabola. FYI: Cov phau ntawv sib txawv muaj kev txhais lus sib txawv ntawm kev siv " txheem daim ntawv " ntawm ib lub quadratic function. (h, k ) yog lub vertex ntawm parabola, thiab x = h yog axis ntawm symmetry.

Yog li ntawd, ua li cas koj thiaj paub yog tias ib daim duab yog quadratic?

Yog qhov txawv yog tas li, lub daim duab yog linear. Yog qhov sib txawv tsis tas li tab sis qhov thib ob txheej ntawm qhov sib txawv yog tas li, lub graph yog quadratic . Yog qhov sib txawv ua raws tus qauv zoo ib yam li y-tus nqi, tus daim duab yog exponential. Saib cov piv txwv hauv qab no kom pom tseeb.

Dab tsi yog qhov zoo ntawm parabola?

Hauv lej, a parabola yog lub dav hlau nkhaus uas yog daim iav-symmetrical thiab yog kwv yees li U-puab.

Pom zoo: