Video: Koj yuav rho peb vectors li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau rho tawm , ntxiv qhov "tsis zoo" ntawm cov vector.
Tsuas yog thim rov qab vector cov kev taw qhia tab sis khaws nws qhov loj tib yam thiab ntxiv rau koj vector taub hau mus rau tus Tsov tus tw raws li koj xav tau. Hauv lwm lo lus, rau rho tawm ib vector , tig vector 180o ib ncig thiab ntxiv nws.
Tsis tas li ntawd, koj yuav rho tawm siv vectors li cas?
Rau rho tawm ob cov duab , koj muab lawv ob txhais taw (los yog tails, qhov tsis-pointy) ua ke; ces kos lub resultant vector , uas yog qhov txawv ntawm ob cov duab , los ntawm lub taub hau vector koj yog rho tawm mus rau lub taub hau vector koj yog rho tawm nws los ntawm.
Qhov thib ob, cov cai rau ntxiv vectors yog dab tsi? Ntxiv los yog rho ob cov duab , ntxiv los yog rho tawm cov khoom sib thooj. Cia →u=?u1,u2? thiab →v=?v1,v2? ua ob cov duab . Qhov sib npaug ntawm ob lossis ntau dua cov duab yog hu ua resultant. Qhov tshwm sim ntawm ob cov duab tuaj yeem pom siv ob qho tib si parallelogram txoj kev los yog daim duab peb sab.
Tsis tas li ntawd, yuav ua li cas thaum koj rho ob vectors?
Tshem tawm vectors ua raws li cov txheej txheem tib yam li ntxiv, tsuas yog cov vector ua rho tawm yog "rov qab" nyob rau hauv kev coj. Xav txog qhov qub cov duab a thiab b li saum toj no, tsuas yog peb 'yuav xam a – b. (Nco ntsoov tias qhov no yog tib yam li, qhov twg -b muaj qhov ntev tib yam li b tab sis yog qhov sib txawv ntawm kev coj.)
Kev rho tawm vectors txhais li cas?
Vector rho tawm yog tus txheej txheem ntawm kev noj a vector sib txawv, thiab yog kev ua haujlwm inverse mus vector ntxiv.
Pom zoo:
Vim li cas peb thiaj li hais txog kev txwv tsis pub muaj kev hais tawm thiab thaum twg peb yuav hais cov kev txwv?
Peb hais txog kev txwv vim nws yuav ua rau qhov sib npaug tsis tau txhais hauv qee qhov txiaj ntsig ntawm x. Qhov kev txwv ntau tshaj plaws rau cov lus qhia muaj nuj nqis yog N / 0. Qhov no txhais tau tias txhua tus lej muab faib los ntawm xoom tsis tau txhais. Piv txwv li, rau txoj haujlwm f(x) = 6/x², thaum koj hloov x = 0, nws yuav ua rau 6/0 uas tsis tau txhais
Koj ntxiv vectors piv txwv li cas?
Piv txwv li: ntxiv cov vectors a = (8,13) thiab b = (26,7) c = a + b. c = (8,13) + (26,7) = (8+26,13+7) = (34,20) Piv txwv: rho tawm k = (4,5) los ntawm v = (12,2) a = v + -k. a = (12,2) + −(4,5) = (12,2) + (−4,−5) = (12−4,2−5) = (8,−3) Piv txwv: ntxiv cov vectors a = (3,7,4) thiab b = (2,9,11) c = a + b
Vim li cas nws thiaj li hais tias lub Orthocenter ntawm daim duab peb sab obtuse yuav tsum nyob rau sab nraud ntawm daim duab peb sab?
Nws hloov tawm tias tag nrho peb qhov siab ib txwm sib tshuam ntawm tib lub ntsiab lus - lub npe hu ua orthocenter ntawm daim duab peb sab. Lub orthocenter tsis yog ib txwm nyob hauv daim duab peb sab. Yog tias daim duab peb sab yog obtuse, nws yuav nyob sab nraud. Txhawm rau ua kom qhov no tshwm sim cov kab qhov siab yuav tsum tau txuas ntxiv kom lawv hla
Yuav ua li cas thaum koj rho vectors?
Physics I For Dummies, 2nd Edition Txhawm rau rho tawm ob lub vectors, koj muab lawv txhais taw (los yog tails, qhov tsis-pointy) ua ke; Tom qab ntawd kos cov txiaj ntsig vector, uas yog qhov sib txawv ntawm ob lub vectors, los ntawm lub taub hau ntawm vector koj rho tawm mus rau lub taub hau ntawm vector koj rho tawm los ntawm
Yuav ua li cas rho tawm rho tawm haujlwm?
Rho dependent termination yog ib qho ntawm ob hom kev txiav tawm hauv prokaryotic transcription, lwm qhov yog intrinsic (los yog Rho-independent). Tom qab khi rau cov saw tshiab RNA, ρ qhov tseem ceeb txav mus raws cov molecule hauv 5'-3' kev taw qhia thiab txhawb kev sib cais los ntawm DNA qauv thiab RNA polymerase