Cov txheej txheem:

Yuav ua li cas koj daws x 2 equations?
Yuav ua li cas koj daws x 2 equations?

Video: Yuav ua li cas koj daws x 2 equations?

Video: Yuav ua li cas koj daws x 2 equations?
Video: Tsis Muaj Peev Xwm Yuav Ua Li Cas 2024, Kaum ib hlis
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Txoj Kev 2 Siv Cov Qauv Quadratic

  1. Muab tag nrho cov ntsiab lus zoo li no thiab txav mus rau ib sab ntawm qhov kev sib npaug .
  2. Sau cov quadratic formula .
  3. Txheeb xyuas qhov tseem ceeb ntawm a, b, thiab c hauv qhov quadraticequation .
  4. Hloov cov nqi ntawm a, b, thiab c rau hauv kev sib npaug .
  5. Ua lej.
  6. Simplify lub hauv paus square.

Ntxiv mus, koj yuav daws li cas rau x hauv ib qho kev sib npaug?

Rau daws x thaum lub kev sib npaug suav nrog tus exponent, pib los ntawm kev cais lub sij hawm nrog tus exponent. Tom qab ntawd, cais qhov sib txawv nrog tus exponent los ntawm kev faib ob sab los ntawm coefficient ntawm tus x lub sij hawm kom tau koj cov lus teb. Yog tias kev sib npaug muaj fractions, pib los ntawm cross-multiplying thefractions.

Qhov thib ob, cov kev daws teeb meem rau qhov sib npaug yog dab tsi? Ib kev sib npaug yog ib qho kev qhia txog algebraic uas feem ntau hais txog qhov tsis paub hloov pauv mus rau lwm qhov sib txawv lossis qhov tsis sib xws. Piv txwv li, x + 2 = 15 yog ib kev sib npaug , as ib2 = 4. Nws daws , or root, ib kev sib npaug yog tej yam muaj nqis los yog txheej txheem uas muaj peev xwm besubstituted rau hauv kev sib npaug los ua kom muaj tseeb.

Tsis tas li ntawd, koj yuav daws li cas rau x nyob rau hauv ib qho kev sib npaug quadratic?

daws x : 2 x 2 + 3 x + 2 = 0. Vim tias a ≠ 1, muab faib los ntawm tus kev sib npaug los ntawm. Tsis muaj kev daws teeb meem hauv cov lej tiag tiag. Nws yuav txaus siab rau koj kom paub tias ua tiav cov txheej txheem square rau kev daws teeb meem sib npaug tau siv rau ntawm kev sib npaug ax2 + bx + c = 0 to derive the plaub fab qauv.

Koj yuav daws li cas rau x thiab y cuam tshuam?

Yuav nrhiav tau x - cuam tshuam ntawm ib tug muab linear kev sib npaug , ntsaws rau 0 rau ' y ' thiab daws 'x '. Nrhiav tus y - cuam tshuam , ntsaws 0 rau ' x ' thiab daws rau ' y '. Nyob rau hauv no nyeem, koj yuav pom yuav ua li cas mus nrhiav tus x - cuam tshuam thiab cov y - cuam tshuam rau ib tug muab linear kev sib npaug . Tshawb xyuas!

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