Ib tug uas tsis yog tus lej matrix yog ib lub square uas nws qhov kev txiav txim tsis yog xoom… Yog li, cov matrix tsis yog lus kuj tseem hu ua tag nrho qib matrix. Rau ib qho tsis-square [A] ntawm m × n, qhov twg m > n, tag nrho qib txhais tau tias tsuas yog n txhua kab yog ywj siab. Muaj ntau ntau txoj hauv kev los piav txog qib ntawm matrix.
Yuav ua li cas yog cov cuab yeej ntawm cov tsis yog cov lus matrix?
Non Singular matrix is a square matrix uas nws qhov kev txiav txim siab yog tus nqi tsis yog xoom Cov cuab yeej tsis yog tus lej matrix yog txaus siab los nrhiav qhov hloov pauv ntawm matrix. Rau ib tug square matrix A=[abcd] [a b c d], qhov xwm ntawm nws yog ib tug tsis zoo matrix yog tus txiav txim ntawm no matrix A yog ib tug tsis xoom nqi.
Thaum twg peb tuaj yeem hais tias lub matrix tsis yog ib qho lus?
Lub tswvyim ntawm nonsingular matrix yog rau square matrix, nws txhais tau hais tias tus txiav txim tsis yog xoom, thiab qhov no yog sib npaug uas cov matrix muaj tag nrho-qib. Nonsingular txhais tau tias lub matrix nyob rau hauv tag nrho cov qeb thiab koj tus inverse ntawm no matrix muaj.
Puas yog pes tsawg matrix tsis yog lus?
Ib square matrix uas tsis yog invertible yog hu ua lus los yog degenerate. Ib square matrix yog ib qho lus yog thiab tsuas yog tias nws qhov kev txiav txim siab yog xoom.
Dab tsi yog qeb ntawm cov tsis yog lus matrix?
2.1.4 Qib ntawm matrix
Ib qho tsis yog ib qho matrix yog ib lub xwmfab uas nws qhov txiav txim tsis yog xoom. Qhov qeb duas ntawm matrix [A] yog sib npaug rau qhov kev txiav txim ntawm qhov loj tshaj plaws uas tsis yog tus lej submatrix ntawm [A].
