Cov txheej txheem:
Video: Koj yuav daws tau qhov system ntawm peb qhov sib npaug li cas los ntawm kev tshem tawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Xaiv ib qho sib txawv ntawm ob kev sib npaug , hais kev sib npaug (2) thiab (3), thiab tshem tawm tib yam txawv. daws tus qhov system tsim los ntawm kev sib npaug (4) thiab (5). Tam sim no, hloov z = 3 rau hauv kev sib npaug (4) nrhiav y. Siv cov lus teb los ntawm Kauj Ruam 4 thiab hloov mus rau ib qho twg kev sib npaug nrog rau qhov sib txawv ntawm qhov seem.
Raws li, koj yuav daws tau qhov system ntawm kev sib npaug li cas los ntawm kev tshem tawm?
Hauv tshem tawm txoj kev koj yog ntxiv los yog rho tawm kev sib npaug kom tau ib kev sib npaug nyob rau hauv ib variable. Thaum cov coefficients ntawm ib tug sib txawv yog opposites koj ntxiv rau kev sib npaug txhawm rau tshem tawm qhov sib txawv thiab thaum cov coefficients ntawm ib qho sib txawv sib npaug koj rho tawm kev sib npaug tshem tawm qhov sib txawv.
Tsis tas li ntawd, koj txhais li cas los ntawm kev tshem tawm? Kev tshem tawm yog tus txheej txheem ntawm kev tshem tawm ib yam dab tsi, txawm tias nws yog pov tseg, yuam kev, lossis kev sib tw. Kev tshem tawm los ntawm Latin lo lus limen, uas txhais tau tias pib. Cov neeg Loos ntxiv ib qho "e" rau qhov pib thiab tsim cov lus qhia tshem tawm, uas txhais tau tias mus banish los yog thawb tshaj qhov chaw pib thiab tawm ntawm lub qhov rooj.
Tom qab ntawd, lo lus nug yog, yuav ua li cas kuv thiaj daws tau ib qho kev sib npaug?
Nov yog qhov nws mus:
- Kauj Ruam 1: Daws ib qho kev sib npaug rau ib qho ntawm qhov sib txawv. Cia peb daws thawj qhov sib npaug rau y:
- 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.
Qhov kev daws teeb meem ntawm kev sib npaug txhais li cas?
A system ntawm equations yog sau los ntawm ob lossis ntau dua kev sib npaug nrog ib tug tib txheej ntawm tsis paub. Hauv daws ib system ntawm equations , peb sim nrhiav qhov tseem ceeb rau txhua qhov tsis paub uas yuav txaus siab rau txhua tus kev sib npaug hauv qhov system.
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
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≤)
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)
Koj yuav daws qhov sib npaug li cas los ntawm kev cais qhov sib txawv?
Cov txheej txheem yooj yim los cais qhov sib txawv yog "ua ib yam dab tsi rau ob tog" ntawm qhov sib npaug, xws li ntxiv, rho tawm, sib npaug, lossis faib ob sab ntawm qhov sib npaug los ntawm tib tus lej. Los ntawm kev rov ua cov txheej txheem no, peb tuaj yeem tau txais qhov sib txawv ntawm ib sab ntawm qhov sib npaug
Yuav ua li cas los daws qhov sib npaug linear siv Gaussian tshem tawm?
Yuav Siv Gaussian Elimination li cas los daws cov kab ke sib npaug Koj tuaj yeem muab cov kab sib npaug los ntawm qhov tsis tu ncua (tsis yog xoom). multiplies kab peb los ntawm –2 muab rau koj ib tug tshiab kab peb. Koj tuaj yeem hloov ob kab. swaps kab ib thiab ob. Koj tuaj yeem ntxiv ob kab ua ke. ntxiv kab ib thiab ob thiab sau nws hauv kab ob