Video: Koj yuav daws tau qhov system ntawm linear equations graphically li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau daws qhov system ntawm linear equations graphically peb daim duab ob leeg kev sib npaug nyob rau hauv tib lub koom haum qhov system . Cov daws mus rau qhov system yuav nyob rau hauv qhov chaw uas ob kab sib tshuam. Ob kab sib tshuam hauv (-3, -4) uas yog daws rau qhov no qhov system ntawm kev sib npaug.
Nyob rau hauv txoj kev no, koj yuav daws tau qhov system ntawm linear equations los ntawm graphing li cas?
Rau daws ib system ntawm linear equations los ntawm graphing , ua ntej kom paub tseeb tias koj muaj ob linear equations . Ces, daim duab kab sawv cev los ntawm txhua tus kev sib npaug thiab saib qhov twg ob kab sib tshuam ib leeg. Lub x thiab y coordinates ntawm qhov chaw sib tshuam yuav yog qhov kev daws teeb meem rau qhov qhov system ntawm kev sib npaug !
Tom qab ntawd, lo lus nug yog, dab tsi yog cov kauj ruam los daws qhov sib npaug linear?
- Kauj Ruam 1: Ua kom yooj yim rau txhua sab, yog tias xav tau.
- Kauj ruam 2: Siv Add./Sub. Cov cuab yeej txav tau lub sij hawm hloov pauv mus rau ib sab thiab tag nrho lwm cov ntsiab lus mus rau sab nraud.
- Kauj ruam 3: Siv ntau./Div.
- Kauj Ruam 4: Tshawb xyuas koj cov lus teb.
- Kuv pom qhov no yog txoj hauv kev sai tshaj plaws thiab yooj yim tshaj plaws los mus rau cov kab zauv sib npaug.
- Piv txwv 6: daws qhov sib txawv.
Tsis tas li ntawd, koj yuav siv daim duab li cas los kuaj xyuas thiab daws cov kab ke?
Yuav siv lub graph-and-check txoj kev mus daws ib qhov system ntawm kab tawm Kev sib npaug ntawm ob qhov sib txawv, siv cov kauj ruam hauv qab no. Sau txhua qhov sib npaug hauv ib daim ntawv uas yooj yim rau daim duab . Daim duab ob qho tib si sib npaug hauv tib lub dav hlau. Kwv yees cov coordinates ntawm qhov chaw ntawm kev sib tshuam.
Yuav ua li cas koj daws tau ib qho kev sib npaug tsis muaj duab?
Rau daws qhov system ntawm linear equations tsis muaj graphing , koj tuaj yeem siv txoj kev hloov pauv. Txoj kev no ua haujlwm los ntawm daws ib tug ntawm cov linear kev sib npaug rau ib qho ntawm qhov sib txawv, ces hloov tus nqi no rau tib qhov sib txawv hauv lwm cov kab kev sib npaug thiab daws rau lwm qhov sib txawv.
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≤)
Koj yuav daws tau qhov system ntawm peb qhov sib npaug li cas los ntawm kev tshem tawm?
Xaiv ib qho sib txawv ntawm ob qhov sib npaug, hais qhov sib npaug (2) thiab (3), thiab tshem tawm qhov sib txawv. Kev daws qhov system tsim los ntawm kev sib npaug (4) thiab (5). Tam sim no, hloov z = 3 rau hauv kab zauv (4) kom pom y. Siv cov lus teb los ntawm Kauj Ruam 4 thiab hloov mus rau hauv ib qho kev sib npaug uas muaj qhov sib txawv ntxiv
Koj yuav daws tau qhov teeb meem linear programming li cas los ntawm txoj kev ntawm cov ces kaum?
METHOD OF CONNERS Khiav cov teeb tsa ua tau (tej thaj tsam), S. Nrhiav qhov EXACT coordinates ntawm tag nrho cov vertices (kaum cov ntsiab lus) ntawm S. Ntsuas lub hom phiaj muaj nuj nqi, P, ntawm txhua vertex Qhov siab tshaj plaws (yog tias muaj) yog qhov loj tshaj ntawm tus nqi ntawm P ntawm vertex. Qhov tsawg kawg nkaus yog qhov tsawg tshaj plaws tus nqi ntawm P ntawm vertex
Koj yuav daws tau qhov system ntawm linear equations algebraically li cas?
Siv kev tshem tawm los daws cov kev daws teeb meem hauv ob qhov sib npaug: x + 3y = 4 thiab 2x + 5y = 5. x = −5, y = 3. Muab txhua lo lus hauv thawj kab zauv los ntawm –2 (koj tau txais –2x – 6y = –8) thiab tom qab ntawd ntxiv cov ntsiab lus hauv ob qhov sib npaug ua ke. Tam sim no daws -y = -3 rau y, thiab koj tau y = 3
Koj yuav daws tau qhov system hauv algebra li cas?
Nov yog yuav ua li cas nws mus: Kauj Ruam 1: daws ib qho kev sib npaug rau ib qho ntawm qhov sib txawv. Kauj Ruam 2: Hloov qhov sib npaug mus rau lwm qhov sib npaug, thiab daws rau x. Kauj Ruam 3: Hloov x = 4 x = 4 x = 4 rau hauv ib qho ntawm qhov sib npaug qub, thiab daws rau y