Koj ntxiv vectors piv txwv li cas?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15

1. Piv txwv : ntxiv tus cov duab a = (8, 13) thiab b = (26, 7) c = a + b. c = (8, 13) + (26, 7) = (8 + 26, 13 + 7) = (34, 20)
2. Piv txwv : rho k = (4, 5) v = (12, 2) a = v + −k. a = (12, 2) + −(4, 5) = (12, 2) + (−4, −5) = (12−4, 2−5) = (8, −3)
3. Piv txwv : ntxiv tus cov duab a = (3, 7, 4) thiab b = (2, 9, 11) c = a + b.

Tib neeg kuj nug, ua li cas koj ntxiv vectors rau ib daim duab?

graphical method of ntxiv vectors A thiab B suav nrog kev kos duab vectors ntawm ib daim duab thiab ntxiv lawv siv lub taub hau-rau-tail txoj kev. Qhov tshwm sim vector R yog txhais tau tias A + B = R. Qhov loj thiab kev taw qhia ntawm R yog txiav txim siab nrog tus pas ntsuas thiab tus protractor, feem.

Tsis tas li ntawd, ob txoj kev ntawm vector ntxiv yog dab tsi? Muaj ntau yam txoj kev rau kev txiav txim siab qhov loj thiab kev taw qhia ntawm qhov tshwm sim ntawm kev ntxiv ob los yog ntau dua cov duab . Cov ob txoj kev uas yuav tau tham hauv zaj lus qhia no thiab siv thoob plaws tag nrho chav tsev yog: Pythagorean theorem thiab trigonometric txoj kev . lub taub hau-rau-tail txoj kev siv ib tug scaled vector daim duab.

Tsis tas li ntawd, cov cai rau ntxiv vectors yog dab tsi?

Vector ntxiv yog kev ua haujlwm ntawm ntxiv ob lossis ntau dua cov duab sib a vector sum. Lub thiaj li hu ua parallelogram txoj cai muab rau txoj cai rau vector ntxiv ntawm ob lossis ntau dua cov duab . Rau ob cov duab thiab, cov vector sum yog tau los ntawm muab lawv lub taub hau mus rau tus Tsov tus tw thiab kos tus vector los ntawm tus Tsov tus tw dawb mus rau lub taub hau dawb.

Lub sij hawm yog scalar lossis vector?

A vector yog a scalar nrog kev taw qhia. Yog li Sijhawm tuaj yeem yog a vector , tab sis nws txhais li cas yog nyob ntawm cov ntsiab lus teb. Hauv 1D nws tsuas muaj 2 cov lus qhia, zoo thiab tsis zoo nrog xoom ua qhov zoo.