Video: Cov nqe lus twg zoo tshaj plaws piav qhia txog qhov tseem ceeb ntawm cov lus qhia muaj nuj nqis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov excluded tus nqi ntawm ib tug rational qhia yog cov tus nqi qhov twg tus denominator ntawm lub kev qhia yog zero. Tsis tas li ntawd, tus naj npawb ntawm zeros ntawm ib tug polynomial yeej ib txwm tsawg dua los yog sib npaug rau degree ntawm lub polynomial. Li no, tus naj npawb ntawm excluded qhov tseem ceeb ntawm ib tug rational qhia tsis tuaj yeem tshaj qhov degree ntawm tus denominator.
Raws li txoj cai, dab tsi yog qhov tsis suav nrog tus nqi rau kev qhia txog kev xav?
Excluded nqi yog tus nqi uas yuav ua rau tus denominator ntawm ib feem sib npaug rau 0. Koj tsis tuaj yeem faib los ntawm 0, yog li nws tseem ceeb heev kom nrhiav tau cov no. cais cov nqi thaum koj daws a rational qhia.
rational expression yog dab tsi? A rational qhia tsis muaj dab tsi ntau tshaj li ib feem nyob rau hauv uas tus zauv thiab/los yog tus denominator yog polynomials. Nov yog qee qhov piv txwv ntawm rational expressions.
Ib sab ntawm qhov no, cov lej twg yuav tsum raug cais tawm ntawm lub ntsiab lus ntawm qhov kev xav tau?
Cov domain ntawm rational expression yog txhua yam tiag tus lej tsuas yog cov uas ua tus denominator sib npaug rau xoom. Txij li thaum 7 7 77 ua tus denominator 0 000, peb yuav tsum cais tawm qhov no los ntawm sau npe.
Yuav ua li cas koj nrhiav tau qhov tseem ceeb uas yuav ua rau ib tug rational qhia tsis tau txhais?
A rational qhia yog tsis tau txhais thaum tus denominator sib npaug zos rau xoom. Yuav nrhiav tau tus nqi uas ua ib qho kev qhia tsis meej , teem lub denominator sib npaug zos rau xoom thiab daws qhov tshwm sim sib npaug. Example: 0 7 2 3 x x − tsis tau txhais vim lub zero yog nyob rau hauv lub denominator.
Pom zoo:
Qhov twg lub cev muaj nuj nqis Qhov ceev ntawm lub suab nyob ntawm?
Qhov ceev ntawm lub suab hauv huab cua yog txiav txim siab los ntawm huab cua nws tus kheej thiab tsis nyob ntawm qhov amplitude, zaus, lossis wavelength ntawm lub suab. Rau cov roj zoo tagnrho qhov ceev ntawm lub suab tsuas yog nyob ntawm nws qhov ntsuas kub thiab tsis muaj kev ywj pheej ntawm cov roj siab
Qhov laj thawj twg zoo tshaj plaws piav qhia vim li cas cov hlau tsis muaj ductile es tsis nkig?
Cov hlau yog ductile es tsis txhob nkig vim tias lawv muaj cov ntawv cog lus hloov tau. Ductility txhais tau hais tias muaj peev xwm ntawm cov hlau los kos rau hauv cov xov hlau. Cov hlau muaj cov khoom sib txuas yooj yim. Qhov kev hloov pauv no tso cai rau lawv ua cov khoom siv
Lub sij hawm twg zoo tshaj plaws piav qhia txog kev kawm ntawm pob zeb?
Taw qhia. Kev kawm ntawm geology yog kev kawm ntawm lub ntiaj teb, thiab yog li thaum kawg yog kev kawm ntawm pob zeb. Geologists txhais lub pob zeb li: Ib qho kev sib sau ua ke ntawm cov zaub mov, mineraloids, lossis cov khoom ntawm lwm cov pob zeb
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi