Cov txheej txheem:

Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?
Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?

Video: Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?

Video: Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?
Video: YUAV UA LI CAS LUAG THIAJ SAIB TAUS YUS 2024, Kaum ib hlis
Anonim

Peb xwb kuaj degree ntawm kev sib npaug. Yog , degree ntawm equation yog sib npaug rau 2 ces tsuas yog nws yog a plaub fab kev sib npaug. Degree ntawm equation yog 2. Yog li ntawd, nws yog a Quadratic Kev sib npaug.

Ib yam li ib tug yuav nug, koj yuav ua li cas paub yog tias daim duab yog plaub npaug?

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.

Tsis tas li ntawd, peb hom quadratic equations yog dab tsi? Txhawm rau tshuaj xyuas, nyob ntawm seb koj npaj nws li cas, a quadratic equation tuaj yeem sau rau hauv peb hom ntawv sib txawv : standard, intercept thiab vertex. Txawm li cas los xij, qhov zoo ntawm tus nqi qhia tau hais tias tus concave-up parabola, thaum tus nqi tsis zoo txhais tau hais tias concave down.

Kuj kom paub, dab tsi ua rau muaj teeb meem quadratic?

Hauv lej, a plaub fab yog hom teeb meem uas cuam tshuam nrog qhov sib txawv ntawm nws tus kheej - kev ua haujlwm hu ua squaring. Cov lus no muab los ntawm thaj tsam ntawm ib lub xwmfab ua nws sab ntev muab nws tus kheej. Lo lus " plaub fab "los ntawm quadratum, lo lus Latin rau square.

Kuv yuav ua li cas thiaj daws tau qhov kev sib npaug plaub npaug?

Yuav kom daws tau ib qho kev sib npaug ntawm plaub fab los ntawm kev tsim,

  1. Muab tag nrho cov ntsiab lus ntawm ib sab ntawm qhov sib npaug ntawm qhov kos npe, tawm hauv xoom ntawm lwm sab.
  2. Qhov xwm txheej.
  3. Teem txhua yam sib npaug rau xoom.
  4. Kho txhua qhov sib npaug.
  5. Tshawb xyuas los ntawm kev ntxig koj cov lus teb hauv qhov sib npaug qub.

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