Daim duab peb sab no tau kos tshwj xeeb kom nws lub dav hlau nyob rau sab laug rau A, yog li ob qho khoom hla hla nyob hauv tib lub dav hlau. … A × (B + C)=A × B + A × C (6) ua pov thawj tias cov khoom hla yog faib.
Yuav ua li cas xa khoom hla?
Cov khoom hla distributes hla vector ntxiv, ib yam li cov khoom dot. Zoo li cov khoom dot, cov khoom ntoo khaub lig coj tus cwj pwm zoo ib yam li cov lej sib npaug, tshwj tsis yog cov cuab yeej 1. Cov khoom hla tsis sib xws.
Puas yog cov khoom hla faib ntau dua?
Vector cross khoom yog distributive tshaj ntxiv. Ntawd yog, feem ntau: a×(b+c)=(a×b)+(a×c)
Puas hla cov khoom ua raws li kev cai lij choj?
Cov khoom hla ntawm ob lub vectors tsis ua raws li txoj cai sib tw. Tus ntoo khaub lig khoom ntawm ob vectors yog additive inverse ntawm ib leeg. Ntawm no, kev taw qhia ntawm cov khoom hla yog muab los ntawm txoj cai sab xis.
Dab tsi yog qhov khoom ntawm tus ntoo khaub lig?
Cov khoom siv ntawm lawv cov vector cross khoom yog muab los ntawm: ddx(a×b)=dadx×b+a×dbdx.
