Video: Qhov kev ncua deb thiab kev hloov pauv zoo li cas thiab txawv li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsis yog, lub nyob deb thiab txav chaw tsis zoo ib yam. Nyob deb txhais tau hais tias qhov ntev ntawm txoj kev koj tsiv thaum hloov chaw yog qhov txawv ntawm koj qhov chaw pib thiab qhov kawg. Nyob deb txhais tau hais tias qhov ntev ntawm txoj kev koj tsiv thaum hloov chaw yog qhov txawv ntawm koj qhov chaw pib thiab qhov kawg.
Hauv qhov no, qhov sib txawv ntawm qhov kev ncua deb yog dab tsi?
Nyob deb yog scalar kom muaj nuj nqis thiab hloov chaw yog vector kom muaj nuj nqis. Kev khiav tawm yog ntsuas nrog siv rau ib qho chaw tshwj xeeb. Nws yog ib txoj kab ncaj nraim los ntawm qhov chaw pib (keeb kwm) mus rau qhov kawg taw tes. Nws kuj yog qhov luv tshaj plaws nrug ntawm ob ntsiab lus.
Ib yam li ntawd, qhov kev ncua deb thiab kev hloov pauv nrog piv txwv yog dab tsi? Kev ncua deb thiab txav nrog cov piv txwv . Piv txwv li: yog hais tias lub tsheb mus rau sab hnub tuaj rau 5 km thiab tig mus rau sab qaum teb rau lwm 8 km, tag nrho nyob deb taug kev los ntawm lub tsheb yuav tsum yog 13 km. Cov nyob deb tsis tuaj yeem yog xoom lossis tsis zoo thiab nws yeej ib txwm ntau tshaj li qhov hloov chaw ntawm qhov khoom.
Ua kom pom qhov no, txhais tau li cas los ntawm kev nyob deb thiab kev txav chaw?
Qhov deb thiab kev txav chaw yog ob qhov ntau uas zoo li txhais tau tias tib yam tab sis txawv txawv nrog cov ntsiab lus sib txawv thiab txhais . Nyob deb yog qhov ntsuas ntawm "ntau npaum li cas hauv av ib yam khoom tau npog" thaum nws txav mus hloov chaw hais txog qhov ntsuas ntawm qhov deb ntawm qhov chaw yog qhov khoom.
Ib qho piv txwv ntawm kev txav chaw yog dab tsi?
Yog hais tias ib yam khoom txav mus rau ib qho kev siv ncej-rau piv txwv , yog tias tus xibfwb txav mus rau sab xis ntawm lub rooj tsavxwm, lossis tus neeg caij tsheb txav mus rau tom qab ntawm lub dav hlau - ces qhov khoom qhov chaw hloov. Qhov kev hloov hauv txoj haujlwm no yog hu ua hloov chaw.
Pom zoo:
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