Muaj pes tsawg txoj kev daws teeb meem muaj qhov system?
Muaj pes tsawg txoj kev daws teeb meem muaj qhov system?

Video: Muaj pes tsawg txoj kev daws teeb meem muaj qhov system?

Video: Muaj pes tsawg txoj kev daws teeb meem muaj qhov system?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

ib xal

Ua raws li qhov no hauv kev txiav txim siab, pes tsawg txoj kev daws teeb meem puas muaj qhov sib npaug?

Ib qho kev sib npaug ntawm cov kab sib npaug feem ntau muaj ib qho kev daws teeb meem, tab sis qee zaum nws tuaj yeem tsis muaj kev daws teeb meem (cov kab sib txuas) lossis cov kev daws teeb meem tsis kawg (tib kab). Kab lus no tshuaj xyuas tag nrho peb qhov xwm txheej. Ib qho kev daws teeb meem . Lub system ntawm linear equations muaj ib xal thaum cov duab sib tshuam ntawm ib qho chaw.

Ib yam li ntawd, nws txhais li cas rau ib qho kev sib npaug kom muaj ib qho kev daws teeb meem tsis kawg? Yog ib qhov system muaj infinitely ntau txoj kev daws teeb meem , ces cov kab sib tshooj ntawm txhua qhov chaw. Hauv lwm lo lus, lawv yog tib txoj kab ncaj nraim! Qhov no txhais tau tias tias ib qho point ntawm kab yog a daws mus rau qhov system . Yog li ntawd, lub system ntawm equations saum no muaj infinitely ntau txoj kev daws teeb meem.

Tsis tas li ntawd, koj yuav nrhiav tau qhov kev daws teeb meem ntawm qhov system li cas?

Cov daws ntawm zoo li ib qhov system yog tus txiav txim khub uas yog a daws rau ob qhov sib npaug. daws a qhov system ntawm linear equations graphically peb teeb tsa ob qho tib si sib npaug hauv tib qho kev ua haujlwm qhov system . Cov daws mus rau qhov system yuav nyob rau hauv lub point uas ob kab sib tshuam.

Dab tsi yog qhov kev daws teeb meem rau cov kab sib txuas?

Parallel Kab : Yog tias ob txoj kab sib npaug muaj tib txoj kab nqes (thiab sib txawv y-intercepts), kab yuav yog thaum uas tig mus . Txij li thaum kab sib npaug yeej tsis sib tshuam, ib qho system muaj ob kab sib npaug yuav muaj NO daws (tsis muaj kev sib tshuam ntawm lub kab .)

Pom zoo: