Video: Dab tsi yog discrete thiab nruam hauv kev txheeb cais?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsis tu ncua vs. Discrete Kev faib tawm. Tswj kab ntawv: A tsis paub meej kev faib tawm yog ib qho uas cov ntaub ntawv tsuas tuaj yeem coj mus rau qee yam tus nqi , piv txwv li integers. A tsis tu ncua kev faib tawm yog ib qho uas cov ntaub ntawv tuaj yeem coj los ntawm ib qho nqi hauv ib qho kev teev tseg (uas yuav yog qhov tsis kawg).
Yog li ntawd, qhov sib txawv ntawm kev sib cais thiab tsis tu ncua hauv kev txheeb cais yog dab tsi?
A tsis paub meej variable yog ib tug variable uas tus nqi yog tau los ntawm kev suav. A tsis tu ncua variable yog ib tug variable uas tus nqi yog tau los ntawm kev ntsuas. A tsis paub meej random variable X muaj tus lej suav tau tus nqi . Piv txwv li: Cia X sawv cev rau cov lej ntawm ob lub dice.
Ib yam li ntawd, qhov sib txawv ntawm kev sib faib thiab kev faib tawm tsis tu ncua yog dab tsi? Qhov tshwm sim kev faib tawm tej zaum yuav yog tsis paub meej los yog tsis tu ncua . A discrete kev faib tawm txhais tau hais tias X tuaj yeem suav tias yog ib qho ntawm cov suav tau (feem ntau finite) tus lej ntawm qhov tseem ceeb, thaum kev faib tawm tsis tu ncua txhais tau hais tias X tuaj yeem suav tias yog ib qho ntawm tus lej tsis kawg (uncountable) ntawm txawv tus nqi.
Tib neeg kuj nug, discrete hauv kev txheeb cais txhais li cas?
Discrete . Txhais : Ib txheej ntawm cov ntaub ntawv tau hais tias yuav tsum txuas ntxiv yog tias qhov tseem ceeb ntawm cov txheej txheem tuaj yeem siv rau txhua tus nqi hauv ib lub sijhawm luv lossis tsis kawg. Txhais : Ib pawg ntawm cov ntaub ntawv hais tias yog tsis paub meej Yog hais tias qhov tseem ceeb ntawm lub teeb yog txawv thiab sib cais (tsis txuas qhov tseem ceeb). Piv txwv : •
Ib qho piv txwv ntawm cov ntaub ntawv txuas ntxiv yog dab tsi?
A cov ntaub ntawv txuas ntxiv teeb (lub ntsiab lus ntawm peb zaj lus qhia) yog qhov ntau cov ntaub ntawv teeb uas tuaj yeem muaj qhov tseem ceeb uas sawv cev ua qhov muaj nqis lossis feem. Qhov hnyav, qhov siab, kub, thiab lwm yam. yog piv txwv kev ntsuas uas yuav ua tau ib cov ntaub ntawv txuas ntxiv teeb. Nco ntsoov qhov no: koj tsis tuaj yeem muaj ib nrab pob basketball.
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