Video: Koj yuav txiav txim siab li cas yog tias qhov tsis sib xws tsis muaj kev daws teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cais tus nqi kiag li qhia nyob rau sab laug ntawm tus kev tsis sib xws . Yog tus lej nyob rau sab nraud ntawm tus kev tsis sib xws kos npe yog negative, koj kev sib npaug los yog tsis muaj kev daws teeb meem los yog tag nrho cov lej tiag kev daws teeb meem . Siv lub cim ntawm txhua sab ntawm koj kev tsis sib xws rau txiav txim siab qhov twg ntawm cov ntaub ntawv no tuav.
Khaws qhov no hauv kev xav, koj puas tuaj yeem sau qhov tsis sib xws uas tsis muaj kev daws teeb meem?
Raws li kev sib npaug, tej zaum yuav muaj cov piv txwv uas muaj tsis muaj kev daws teeb meem rau ib kev tsis sib xws . daws x. Cais tus nqi kiag li rho tawm 9 los ntawm ob sab ntawm tus kev tsis sib xws . Tus nqi tag nrho ntawm ib qho ua tau yeej tsis muaj tus lej tsis zoo, yog li muaj tsis muaj kev daws teeb meem rau tus kev tsis sib xws.
dab tsi yog txhua tus lej tiag thiab tsis muaj kev daws teeb meem? Thaum twg ib yam thiab txhua tus lej tiag hloov rau 'x' yuav txaus siab rau qhov sib npaug. Thaum lub daws muaj pes tsawg hauv tus denominator. Thaum lub daws tau tsis muaj tseeb thiab tsis muaj tus nqi ntawm 'x' yuav txaus siab rau qhov sib npaug. 2 tsis sib npaug 6 yog li qhov sib npaug muaj tsis muaj tshuaj.
Ib sab saum toj, dab tsi ua rau kev sib npaug tsis muaj kev daws teeb meem?
Cov daws x = 0 txhais tau tias tus nqi 0 txaus siab rau kev sib npaug , yog li muaj ib daws . “ Tsis muaj tshuaj ” txhais tau tias muaj tsis muaj tus nqi, tsis txawm 0, uas yuav txaus siab rau kev sib npaug . Qhov no yog vim muaj tiag tsis muaj tshuaj - muaj tsis muaj tus nqi rau x uas yuav ua tus kev sib npaug 12 + 2x - 8 = 7x + 5 - 5x.
Dab tsi yog qhov tsis sib xws hauv lej?
Ib kev tsis sib xws hais tias ob qhov tseem ceeb tsis sib npaug. a ≠ b hais tias a tsis sib npaug b. Muaj lwm cov cim tshwj xeeb uas qhia tias yam twg tsis sib npaug. a b hais tias a yog ntau dua b.
Pom zoo:
Koj yuav txiav txim siab li cas yog tias kev sib raug zoo yog qhov ua haujlwm ntawm daim duab?
LUS TEB: Cov lus teb piv txwv: Koj tuaj yeem txiav txim siab seb txhua lub ntsiab lus ntawm lub npe yog ua ke nrog ib lub ntsiab lus ntawm qhov ntau. Piv txwv li, yog muab ib daim duab, koj tuaj yeem siv txoj kab ntsug; Yog hais tias ib txoj kab ntsug hla cov duab ntau dua ib zaug, ces qhov kev sib raug zoo uas cov duab sawv cev tsis yog ib qho haujlwm
Yuav ua li cas koj thiaj paub yog tias tus nqi sib npaug tsis muaj kev daws teeb meem?
Tus nqi tiag tiag ntawm tus lej yog nws qhov kev ncua deb ntawm xoom. Tus lej ntawd yuav yog qhov zoo, vim koj tsis tuaj yeem ua tsis zoo ob txhais taw deb ntawm ib yam dab tsi. Yog li txhua tus nqi sib npaug sib npaug sib npaug rau tus lej tsis zoo yog tsis muaj kev daws teeb meem, txawm tias tus lej ntawd yog dab tsi
Yuav ua li cas koj txiav txim siab yog tias daim ntawv cog lus yog polar tsis muaj lub rooj electronegativity?
Kauj Ruam 2: Txheeb xyuas txhua daim ntawv cog lus raws li polar lossis nonpolar. (Yog hais tias qhov sib txawv ntawm electronegativity rau cov atoms nyob rau hauv ib daim ntawv cog lus yog ntau tshaj 0.4, peb xav txog daim ntawv cog lus polar. Yog hais tias qhov sib txawv ntawm electronegativity tsawg dua 0.4, daim ntawv cog lus yog qhov tseem ceeb nonpolar.) Yog tias tsis muaj polar bonds, lub molecule yog tsis muaj polar
Puas yog nws ua tau rau ib qho kev sib npaug ntawm ob txoj kab sib npaug kom tsis muaj kev daws teeb meem piav qhia koj qhov laj thawj?
Cov kab ke ntawm kab sib npaug tuaj yeem tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Ob kab no tsis tuaj yeem hla ob zaug. Cov lus teb raug yog tias qhov system muaj ib qho kev daws teeb meem. Total Number of Points Number of 2-Point Baskets Number of 3-Point Baskets 17 4 (8 ntsiab lus) 3 (9 points) 17 1 (2 points) 5 (15 points)
Yuav ua li cas koj thiaj paub yog tias tus nqi tsis sib xws tsis muaj kev daws teeb meem?
Okay, yog tias qhov tseem ceeb tshaj plaws yeej ib txwm zoo lossis xoom tsis muaj txoj hauv kev uas lawv tuaj yeem tsawg dua lossis sib npaug rau tus lej tsis zoo. Yog li ntawd, tsis muaj kev daws teeb meem rau ob qho no. Hauv qhov no yog tias tus nqi tiag tiag yog qhov zoo lossis xoom ces nws yuav nco ntsoov ntau dua lossis sib npaug rau tus lej tsis zoo