Video: Yuav ua li cas ib tug kab zauv muaj infinite kev daws teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib linear equation muaj infinitely ntau kev daws teeb meem (hauv qhov sib txawv x) yog thiab tsuas yog tias ob qho tag nrho cov coefficients ntawm x ntawm ob sab yog sib npaug, thiab tag nrho cov nyob ntawm ob sab yog sib npaug.
Hauv qhov no, nws txhais li cas thaum ib qho kev sib npaug muaj cov kev daws teeb meem tsis kawg?
Tsis muaj daws yuav txhais tau tias tias muaj yog tsis teb rau cov kev sib npaug . Nws yog tsis yooj yim rau cov kev sib npaug kom muaj tseeb txawm li cas los xij peb muab rau qhov sib txawv. Cov kev daws teeb meem tsis kawg yuav txhais tau tias uas tej nqi rau qhov sib txawv yuav ua cov kev sib npaug muaj tseeb. Nco ntsoov tias peb muaj variables ntawm ob sab ntawm lub kev sib npaug.
Ib yam li ntawd, puas yog 0 0 infinite lossis tsis muaj kev daws teeb meem? Ben Mai · Becca M. Rau cov lus teb kom muaj ib qho kev daws teeb meem tsis kawg , ob qhov sib npaug thaum koj daws yuav sib npaug 0=0 . Ntawm no yog ib qho teeb meem uas muaj ib qho tsis kawg tus lej ntawm kev daws teeb meem . Yog koj daws qhov no koj cov lus teb yuav yog 0=0 qhov no txhais tau tias qhov teeb meem muaj tsis kawg tus lej ntawm kev daws teeb meem.
Tsis tas li ntawd, yuav ua li cas daws qhov kev sib npaug uas tsis muaj kev daws teeb meem zoo ib yam li kev daws qhov sib npaug uas muaj cov kev daws teeb meem tsis kawg?
Koj ua tsis tau " daws ”ib kev sib npaug uas tsis muaj kev daws teeb meem ; uas yuav yog qhov tsis sib haum xeeb txij li " daws , "los ntawm txhais, txhais tau tias nrhiav a daws . Txawm li cas los xij, qee zaum kev daws teeb meem tsis kawg tsis yog qhov teeb meem tiag tiag vim lawv tsuas yog ib lossis ob peb xwb kev daws teeb meem uas haum rau qhov xwm txheej kev sib npaug piav.
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.
Pom zoo:
Muaj pes tsawg txoj kev daws teeb meem tib kab muaj?
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
Yuav ua li cas muaj ntau yam kev daws teeb meem overlapping kab?
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. 2-Point Baskets Number of 3-Point Baskets 1 0 2 1 3 2 4 3
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 los hloov ib tug quadratic kab zauv los ntawm vertex daim ntawv rau lub tshuab xam zauv?
Lub laij lej rau kev hloov pauv los ntawm daim ntawv yooj yim mus rau vertex daim ntawv y = x2 + 3x + 5. x2 + 3x + 5 = || +(p2)2-(p2)2=0. || a2+2ab+b2=(a+b)2. || -1⋅-1=+1. xS=-32=-1.5. yS=-(32)2+5=2.75
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)