Video: Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev daws qhov tsis sib xws linear yog heev zoo sib xws rau daws cov kab zauv sib npaug . Qhov txawv tseem ceeb yog koj tig lub kev tsis sib xws kos npe thaum muab faib lossis muab faib los ntawm tus lej tsis zoo. Daim duab linear tsis sib npaug muaj ob peb qhov sib txawv ntxiv. Qhov uas yog ntxoov ntxoo muaj xws li qhov tseem ceeb nyob qhov twg linear tsis sib xws yog muaj tseeb.
Ib yam li ntawd, qhov zoo sib xws thiab qhov sib txawv ntawm qhov sib npaug thiab qhov tsis sib xws yog dab tsi?
1. Ib kev sib npaug yog ib nqe lus lej uas qhia tau hais tias tus nqi sib npaug ntawm ob kab lus thaum ib kev tsis sib xws yog ib nqe lus lej uas qhia tau hais tias ib qho kev qhia tsawg dua lossis ntau dua li lwm tus. 2. Ib kev sib npaug qhia qhov sib npaug ntawm ob qhov sib txawv thaum ib kev tsis sib xws qhia cov kev tsis sib xws ntawm ob qhov sib txawv.
Tsis tas li ntawd, txoj cai los daws qhov tsis sib xws yog dab tsi? Safe Yam Ua Tau Tej yam no tsis cuam tshuam rau kev coj ua kev tsis sib xws : Ntxiv (lossis rho tawm) tus lej los ntawm ob sab. Muab ntau (lossis faib) ob sab los ntawm tus lej zoo. Simplify ib sab.
Kuj kom paub yog, koj yuav daws cov kab zauv sib npaug thiab cov kab sib npaug li cas?
Kev daws ib leeg linear tsis sib npaug ua raws li zoo tib yam txheej txheem rau daws cov kab zauv sib npaug . Peb yuav ua kom yooj yim rau ob sab, tau txais tag nrho cov ntsiab lus nrog qhov sib txawv ntawm ib sab thiab cov lej ntawm lwm sab, thiab tom qab ntawd muab faib / faib ob sab los ntawm coefficient ntawm qhov sib txawv kom tau txais kev daws teeb meem.
Dab tsi yog 3 yam piv txwv ntawm kev tsis sib xws hauv zej zog niaj hnub no?
Cov piv txwv loj ntawm kev tsis sib xws hauv zej zog suav nrog cov nyiaj tau los sib txawv, poj niam txiv neej kev tsis sib xws, kev kho mob, thiab kev sib raug zoo. Hauv kev saib xyuas kev noj qab haus huv, qee tus neeg tau txais kev saib xyuas zoo dua thiab muaj kev tshaj lij dua piv rau lwm tus. Lawv kuj xav tias yuav them ntau dua rau cov kev pabcuam no.
Pom zoo:
Koj yuav ua li cas thiaj daws tau qhov sib npaug ntawm qhov tsis sib xws?
Muaj peb kauj ruam: Rov kho qhov sib npaug kom 'y' nyob rau sab laug thiab txhua yam ntawm sab xis. Teem lub 'y =' kab (ua rau nws yog ib txoj kab ruaj khov rau y≤ lossis y≥, thiab ib txoj kab dashed rau y) Duab ntxoov ntxoo saum kab rau 'ntau tshaj' (y> lossis y≥) lossis hauv qab kab rau ib qho 'tsawg dua' (y < lossis y≤)
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
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