Video: Puas muaj qhov tseem ceeb muaj kev txwv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
txwv nrog Tus nqi tsis txaus . txwv koom nrog qhov tseem ceeb feem ntau cuam tshuam cov khoom rau hauv rooj plaub. Nco ntsoov tias |f(x)|={f(x), if f(x)≧0;−f(x), if f(x)≦0.
Kuj nug, koj puas tuaj yeem ua qhov tseem ceeb?
Muaj ob txoj kev daws teeb meem x = a thiab x = -a vim tias ob tus lej nyob ntawm qhov deb ntawm 0. Koj pib los ntawm kev ua nws rau hauv ob qhov sib npaug sib cais thiab tom qab ntawd daws lawv sib cais. Ib tus nqi kiag kev sib npaug tsis muaj kev daws teeb meem yog tias tus tus nqi kiag kev qhia sib npaug ntawm tus lej tsis zoo txij li ib tus nqi kiag li yeej tsis phem.
Ib sab saum toj no, cov kev txwv hauv lej yog dab tsi? Txwv ( lej ) Ib lej , a txwv yog tus nqi uas muaj nuj nqi (los yog ib ntus) "txoj hauv kev" raws li cov tswv yim (lossis qhov ntsuas) "txoj hauv kev" qee tus nqi. txwv yog qhov tseem ceeb rau kev suav (thiab lej tsom xam nyob rau hauv dav) thiab yog siv los txhais continuity, derivatives, thiab integrals.
Ib yam li ntawd, nws nug, peb hom kev tsis sib haum xeeb yog dab tsi?
- Discontinuities tuaj yeem faib ua dhia, tsis kawg, tshem tau, qhov kawg, lossis sib xyaw.
- Kev tshem tawm tsis tu ncua yog tus cwj pwm los ntawm qhov tseeb tias qhov txwv muaj.
- Kev tshem tawm tsis tu ncua tuaj yeem "kho" los ntawm kev rov txhais cov haujlwm.
Puas yog tus nqi tiag tiag ua haujlwm txawv?
Thaum a muaj nuj nqi yog sib txawv nws tseem tsis tu ncua. Tab sis a muaj nuj nqi tuaj yeem txuas ntxiv tab sis tsis yog sib txawv . Piv txwv li cov tag nrho muaj nuj nqis muaj nuj nqi yog ua tau tas mus li (txawm tsis yog sib txawv ) x = 0.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm kev tawm hauv cov crystal kev loj hlob tsis muaj kev cuam tshuam?
Nws yog ib qho tseem ceeb uas yuav tsum tau ua kom qhov kev sim npog kom tsis txhob muaj plua plav thiab lwm yam khoom siv tsis xav tau los ntawm kev cuam tshuam kev loj hlob siv lead ua. Saib xyuas kev tsim cov muaju ntawm cov hlua txhua hnub. Sab laug tsis muaj kev cuam tshuam, cov muaju yuav tsum loj dua txhua hnub kom txog thaum cov tshuaj qhuav qhuav
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom
Vim li cas qhov kev hloov pauv tseem ceeb hauv kev puas siab puas ntsws?
Nws yog ib qho tseem ceeb heev uas cov kev tshawb fawb tuaj yeem rov ua dua, vim tias nws txhais tau tias lwm tus neeg tshawb fawb tuaj yeem sim cov kev tshawb fawb ntawm kev tshawb fawb. Replicability ua rau cov neeg tshawb nrhiav ncaj ncees thiab tuaj yeem ua rau cov neeg nyeem kev ntseeg siab hauv kev tshawb fawb. Yog tias qhov kev tshawb fawb tau rov ua dua, tom qab ntawd cov lus xaus tsis tseeb tuaj yeem pom tias yog qhov tsis yog
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Vim li cas kev ntsuas thiab ntsuas qhov tseem ceeb hauv kev tshawb fawb txog kev lag luam?
Cov nplai tau siv ntau zaus hauv kev tshawb fawb kev lag luam vim tias lawv pab hloov cov ntaub ntawv zoo (xav, kev xav, kev xav) rau hauv cov ntaub ntawv ntau, cov lej uas tuaj yeem txheeb xyuas tau. Koj tsim ib qho kev ntsuas los ntawm kev muab cov khoom (yuav ua tau piav qhia) rau tus lej