Video: Puas muaj ntau tshaj ib qho kev sib tshuam ntawm cov duab ntawm ob kab sib npaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsuas yog cov graphs ntawm ob kab zauv sib npaug sib ntsib, muaj tau ua xwb ib qho kev sib tshuam , vim ob kab tuaj yeem sib tshuam hauv feem ntau ib point . Los ntawm qhov ntawd taw tes , txav ib unit mus rau sab xis thiab txav vertically tus nqi ntawm txoj kab nqes rau zaj duab xis ib thib ob taw tes . Ces txuas cov ob ntsiab lus.
Tsis tas li lo lus nug yog, koj ua li cas thiaj nrhiav tau lub ntsiab lus ntawm kev sib tshuam nrog ob qhov sib npaug?
Yuav nrhiav tau taw tes ntawm kev sib tshuam algebraically, daws txhua kev sib npaug rau y, set ob kab lus rau y sib npaug rau ib leeg, daws rau x, thiab ntsaws tus nqi ntawm x rau hauv ib qho ntawm thawj kev sib npaug txhawm rau nrhiav qhov sib thooj y-tus nqi. Cov nqi ntawm x thiab y yog cov x- thiab y-tus nqi ntawm cov taw tes ntawm kev sib tshuam.
puas yuav ib txoj kab ke ib txwm muaj ib qho kev sib tshuam? Txij li thaum a taw tes ntawm kev sib tshuam yog nyob rau ntawm ob kab, nws yuav tsum yog ib qho kev daws rau ob qho tib si sib npaug. 5. Joel hais tias a qhov system ntawm kab tawm kev sib npaug yeej yuav muaj raws nraim ib daws thaum twg qhov nqes hav ntawm ob kab yog txawv. Yog li ntawd, lawv yuav tsum sib tshuam ntawm ib thiab xwb ib point.
Ib yam li ib tug yuav nug, pes tsawg zaus cov kab ntawm ob kab sib npaug sib tshuam?
Cov ob kab nyob rau hauv lub system yog converging li x nce thiab yuav thaum kawg sib tshuam , txhais tau hais tias muaj ib qho kev daws teeb meem rau qhov system no. C) Tsis yog. Cov txheej txheem ntawm linear equations tau tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Cov no ob kab ua tsis tau sib tshuam ob zaug.
Ib txoj kab hluav taws xob puas tuaj yeem muaj ob txoj kev daws teeb meem?
Qhov system ntawm ob linear kev sib npaug ua tau 't muaj raws nraim leej twg kev daws teeb meem . Qhov laj thawj yog thaum peb muaj ob ncaj kab, lawv ua tau tsuas yog sib tshuam ntawm ib qho kev sib tshuam, tsis muaj ntxiv lawm. Yog li kom rov hais dua, qhov system ntawm ob linear kev sib npaug tuaj yeem muaj ib leeg xwb daws , lawv ua tau 't muaj raws nraim ob txoj kev daws teeb meem.
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
Dab tsi yog qhov txawv ntawm kev cuam tshuam kev cuam tshuam thiab kev cuam tshuam cuam tshuam?
Paub qhov txawv ntawm kev cuam tshuam kev tsim kho thiab kev cuam tshuam puas tsuaj. Kev tsim kev cuam tshuam tshwm sim thaum lub crests ntawm ob nthwv dej ntxiv ua ke. Kev cuam tshuam kev puas tsuaj tshwm sim thaum lub crest ntawm ib yoj raug txo los ntawm lub trough ntawm lwm tus
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)
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no