Video: Yuav ua li cas koj nrhiav tau cov kev txwv ntawm ib tug rational qhia?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txwv yog tias tus denominator tsis tuaj yeem sib npaug rau xoom. Yog li hauv qhov teeb meem no, txij li 4x yog nyob rau hauv tus lej nws tsis tuaj yeem sib npaug zero. Nrhiav tag nrho cov txiaj ntsig ntawm x uas muab rau koj xoom hauv qhov denominator. Yuav nrhiav tau txwv ntawm a kev xav muaj nuj nqi, nrhiav qhov tseem ceeb ntawm qhov sib txawv uas ua rau tus denominator sib npaug 0.
Nyob rau hauv no txoj kev, ib tug rational qhia tsis muaj kev txwv?
Zoo tib yam yog muaj tseeb rau rational expressions . Qhov thib ob rational expression yog yeej tsis xoom nyob rau hauv lub denominator thiab yog li peb tsis xav tau txhawj txog tej kev txwv . Nco ntsoov tias tus lej ntawm qhov thib ob rational expression yuav ua zero. Qhov ntawd yog ok, peb xwb xav tau kom tsis txhob faib los ntawm xoom.
Ib sab saum toj no, koj yuav daws cov lus hais txog kev xav li cas? Cov kauj ruam los daws qhov rational equation yog:
- Nrhiav tus denominator.
- Muab txhua yam los ntawm tus lej feem.
- Ua kom yooj yim.
- Tshawb xyuas cov lus teb kom paub tseeb tias tsis muaj kev daws teeb meem ntxiv.
Qhov thib ob, vim li cas peb thiaj li hais txog kev txwv tsis pub muaj kev hais tawm thiab thaum twg peb hais txog kev txwv?
Teb Cov Kws Paub Tseeb rational expressions yog cov uas muaj cov ntsiab lus fractional. Peb lub xeev txwv vim tias nws yuav ua rau qhov sib npaug tsis tau txhais hauv qee qhov txiaj ntsig ntawm x. Feem ntau kev txwv rau kev hais lus rational yog N/0. Qhov no txhais tau tias txhua tus lej muab faib los ntawm xoom tsis tau txhais.
Yuav ua li cas koj daws rational algebraic kab zauv?
- Kev daws:
- Kauj ruam 1: Muab tag nrho cov denominators thiab txiav txim siab lub LCD.
- Kauj Ruam 2: Txheeb xyuas cov kev txwv. Hauv qhov no, lawv yog x≠−2 x≠−2 thiab x≠−3 x≠−3.
- Kauj ruam 3: Muab ob sab ntawm qhov sib npaug los ntawm LCD.
- Kauj Ruam 4: daws qhov kev sib npaug tshwm sim.
- Kauj Ruam 5: Tshawb xyuas cov kev daws teeb meem ntxiv.
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