Video: Yuav ua li cas koj nrhiav tau tus sau ntawm kev txwv nyob rau hauv ib qho kev sib npaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yuav ua li cas: Muab ib txoj haujlwm sau rau hauv ib qho kev sib npaug daim ntawv uas suav nrog ib feem, nrhiav tus sau npe . Txheeb xyuas tus nqi nkag. Txheeb xyuas ib qho twg txwv nyob rau hauv lub tswv yim. Yog hais tias muaj ib tug denominator nyob rau hauv lub function qauv , teem lub denominator sib npaug rau xoom thiab daws rau x.
Ib yam li ntawd, koj ua li cas thiaj nrhiav tau lub ntsiab ntawm ib qho kev sib npaug?
Rau hom kev ua haujlwm no, lub sau npe yog txhua tus lej tiag. Kev ua haujlwm nrog ib feem nrog qhov sib txawv hauv tus lej. Rau nrhiav tus sau ntawm hom kev ua haujlwm no, teeb tsa hauv qab sib npaug rau xoom thiab tsis suav nrog x tus nqi koj nrhiav thaum koj daws cov kev sib npaug . Ib qho kev ua haujlwm nrog qhov sib txawv hauv lub cim radical.
Koj qhia li cas yog tias tus sau yog txhua tus lej tiag? Domain yog txhua tus lej tiag Tsuas yog 0. Txij li kev faib los ntawm 0 tsis tau txhais, (x-3) tsis tuaj yeem yog 0, thiab x tsis tuaj yeem yog 3. Domain yog txhua tus lej tiag tshwj tsis yog 3. Txij li lub hauv paus square ntawm ib qho tus lej tsawg dua 0 tsis tau txhais, (x + 5) yuav tsum sib npaug los yog ntau dua xoom.
Ib yam li ntawd, tib neeg nug, nws txhais li cas los txwv lub npe?
Txwv tsis pub Domain . Kev siv a sau npe rau lub luag haujlwm uas me dua qhov ua haujlwm sau npe ntawm txhais . Nco tseg: txwv thaj chaw feem ntau yog siv los qhia ib-rau-ib ntu ntawm ib txoj haujlwm. Saib thiab.
Koj pom cov kev txwv ntawm ib daim duab li cas?
Txhawm rau txwv tus sau lossis ntau yam (x lossis y qhov tseem ceeb ntawm a daim duab ), koj tuaj yeem ntxiv cov txwv mus rau qhov kawg ntawm koj qhov sib npaug hauv curly brackets {}. Piv txwv li, y=2x{1<x<3} yuav daim duab kab y = 2x rau x qhov tseem ceeb ntawm 1 thiab 3. Koj tuaj yeem siv tau txwv ntawm qhov ntau ntawm ib qho kev ua haujlwm thiab ib qho kev txiav txim siab.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
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 nrhiav tau tus naj npawb ntawm qhov tshwm sim hauv ib qho piv txwv?
Tom qab ntawd, muab cov naj npawb ntawm qhov tshwm sim los ntawm tus lej ntawm cov yob. Txij li thaum peb tsuas yog dov ib zaug xwb, ces tus naj npawb ntawm cov txiaj ntsig tau yog 6. Cov lus teb yog qhov chaw piv txwv yog 1, 2, 3, 4, 5, 6 thiab tus lej ntawm qhov tshwm sim tau yog 6
Yuav ua li cas koj sau ib qho kev sib npaug nyob rau hauv txoj kab nqes intercept daim ntawv rau ib lub rooj?
Siv qhov sib npaug y = mx + b thiab ntsaws rau hauv tus nqi m (m = 1) thiab ib khub ntawm (x, y) kev tswj hwm ntawm lub rooj, xws li (5, 3). Ces daws rau b. Thaum kawg, siv qhov m thiab b qhov tseem ceeb koj pom (m = 1 thiab b = -2) los sau cov kab zauv