Matrix yog kev teeb tsa ntawm cov lej, cim, lossis kab lus hauv kab thiab kab. Txhawm rau muab cov lej sib npaug, koj yuav tsum muab cov ntsiab lus (lossis tus lej) hauv thawj kab ntawm cov lej los ntawm cov ntsiab lus hauv kab thib ob ntawm cov lej thiab ntxiv cov khoom. Koj tuaj yeem muab cov lej sib piv nrog rau ob peb kauj ruam yooj yim uas xav tau kev ntxiv kom raug, sib npaug thiab tso cov qhab nia.
Kauj ruam
Kauj Ruam 1. Ua kom ntseeg tau tias cov lej sib npaug
Koj tsuas tuaj yeem muab cov lej sib piv yog tias cov lej ntawm thawj kab ntawv sib npaug sib npaug rau cov lej ntawm kab thib ob.
Cov lej no tuaj yeem muab sib npaug vim tias thawj tus lej, Matrix A, muaj 3 kab, thaum thib ob sib piv, Matrix B, muaj 3 kab
Kauj Ruam 2. Kos qhov ntev ntawm cov khoom matrix
Tsim qhov tshiab, tsis muaj qhov sib piv, uas yuav cim qhov ntev ntawm cov khoom ntawm ob qib. Cov lej uas sawv cev rau cov khoom ntawm Matrix A thiab Matrix B yuav muaj cov lej ib kab ib yam li thawj tus lej thiab tib tus lej ntawm txhua kab raws li tus lej thib ob. Koj tuaj yeem kos cov thawv dawb kom pom cov naj npawb ntawm kab thiab kab hauv cov lej no.
- Matrix A muaj 2 kab, yog li qhov tshwm sim ntawm kev sib npaug ntawm cov lej yuav muaj 2 kab.
- Matrix B muaj 2 kab ntawv, yog li qhov txiaj ntsig ntawm kev sib npaug ntawm matrix yuav muaj 2 kab.
- Qhov tshwm sim ntawm cov khoom matrix yuav muaj 2 kab thiab 2 kab.
Kauj Ruam 3. Nrhiav qhov tshwm sim ntawm thawj dot khoom
Txhawm rau nrhiav qhov tshwm sim ntawm thawj cov khoom lag luam, koj yuav tsum muab cov khoom sib txuas ua ke hauv thawj kab los ntawm thawj ntu hauv thawj kab, ntu thib ob hauv thawj kab los ntawm ntu thib ob hauv thawj kab, thiab ntu thib peb hauv thawj kab los ntawm kab lus thib peb hauv thawj kab lus. Tom qab ntawd, ntxiv cov txiaj ntsig sib npaug los nrhiav dot khoom (dot).
Piv txwv tias koj tau txiav txim siab ua ntej xam cov ntsiab lus hauv kab thib ob thiab kab thib ob (hauv qab txoj cai) ntawm cov khoom matrix. Nov yog koj ua nws li cas:
- 6 x -5 = -30
- 1 x 0 = 0 ib
- -2x2 = -4
- -30 + 0 + (-4) = -34
-
Qhov tshwm sim ntawm cov khoom teev yog -34 thiab qhov txiaj ntsig no tau sau rau hauv qab txoj cai ntawm cov khoom lag luam matrix.
Thaum koj muab cov lej sib npaug, cov khoom teev yuav raug sau rau hauv kab ua haujlwm ntawm thawj cov lej thiab kab ntawv ntawm txoj haujlwm thib ob. Piv txwv li, thaum koj paub dot cov khoom ntawm kab hauv qab ntawm Matrix A thiab sab xis ntawm Matrix B, cov lus teb, -34, tau sau rau hauv kab hauv qab thiab kab sab xis ntawm cov khoom lag luam matrix
Kauj Ruam 4. Nrhiav qhov tshwm sim ntawm qhov khoom thib ob
Piv txwv tias koj xav nrhiav lub sijhawm nyob hauv qab sab laug ntawm cov khoom matrix. Txhawm rau nrhiav lub sijhawm no, koj tsuas yog yuav tsum tau muab cov ntsiab lus hauv kab hauv qab ntawm thawj lub zauv los ntawm cov ntsiab lus hauv thawj kab ntawm ob lub zauv thib ob thiab tom qab ntawd ntxiv lawv. Siv tib txoj hauv kev los sib npaug thawj kab thiab kab - pom dua dot khoom (ua t)nws.
- 6 x 4x = 24
- 1 x (-3) = -3
- (-2) x 1 = -2
- 24 + (-3) + (-2) = 19
- Qhov tshwm sim ntawm cov khoom teev yog -19 thiab qhov txiaj ntsig no tau sau rau hauv qab sab laug ntawm cov khoom lag luam matrix.
Kauj Ruam 5. Nrhiav lwm cov khoom teev ob
Txhawm rau nrhiav lub sijhawm nyob rau sab saud sab saum toj ntawm cov khoom matrix, pib los ntawm kev nrhiav cov khoom teev ntawm cov kab saum toj kawg nkaus ntawm Matrix A thiab sab laug ntawm Matrix B. Nov yog qhov koj yuav ua li cas:
- 4x 2 = 8
- 3 x (-3) = -9
- (-1) x 1 = -1
- 8 + (-9) + (-1) = -2
-
Qhov tshwm sim ntawm cov khoom teev yog -2 thiab qhov txiaj ntsig no tau sau rau sab saud sab laug ntawm cov khoom lag luam matrix.
Txhawm rau nrhiav lub sijhawm nyob rau sab xis saum toj ntawm cov khoom matrix, tsuas yog saib rau cov khoom teev ntawm kab saum toj kawg nkaus ntawm Matrix A thiab kab sab xis ntawm Matrix B. Nov yog qhov koj ua li cas:
- 2 x (-5) = -10
- 3 x 0 = 0 po
- (-1) x 2 = -2
- -10 + 0 + (-2) = -12
- Cov khoom teev yog -12 thiab qhov txiaj ntsig no tau sau rau sab xis saum toj ntawm cov khoom lag luam matrix.
Kauj Ruam 6. Ua kom ntseeg tau tias plaub yam khoom teev nyob hauv qhov chaw raug hauv cov khoom matrix
19 yuav tsum yog nyob rau sab laug hauv qab, -34 yuav tsum yog nyob hauv qab txoj cai, -2 yuav tsum nyob rau sab laug saum toj, thiab -12 yuav tsum yog nyob rau sab xis saum toj.
Lub tswv yim
- Siv kab ntu, thiab tsis siv kab, tuaj yeem muab cov lus teb tsis raug. Yog tias kab uas sawv cev rau kab ntawv xav tau kev txuas ntxiv kom hla ib kab, tom qab ntawd lengthen nws! Qhov no tsuas yog txheej txheem kev pom kom yooj yim rau koj kom paub kab thiab kab twg los siv ua haujlwm nrog txhua lub ntsiab lus ntawm cov khoom.
- Cov khoom ntawm ob qib kawm yuav tsim tus lej ntawm kab sib npaug rau tus lej ntawm kab ntawm thawj tus lej thiab tus lej sib npaug rau tus lej ntawm kab thib ob.
- Sau koj cov nyiaj. Kev sib tw ua lej koom nrog ntau qhov kev suav thiab nws yooj yim heev kom tau txais sidetracked thiab tsis nco qab tus lej twg koj tab tom sib tw.
