Lub cim E txhais li cas?
Lub cim E txhais li cas?

Video: Lub cim E txhais li cas?

Video: Lub cim E txhais li cas?
Video: NPAU SUAV POM Khau txhais Li Cas/ Tus Lej 2024, Kaum ib hlis
Anonim

E notation, los yog scientific notation, ib txoj kev sau ntawv loj heev thiab tsawg heev. ∃ (rov qab E ; U + 2203) los yog muaj nuj nqis kom muaj nuj nqis, lub cim rau "muaj nyob", nyob rau hauv predicate logic; ∃! lub ntsiab lus "muaj ib leeg xwb" (lossis "muaj ib yam nkaus") - saibUniqueness quantification.

Ntawm no, lub cim no txhais li cas ∑?

Teb Aug 11, 2017. in lej, this lub cim summation (lub nroog Greek cim ) yog theaddition ntawm ib ntu ntawm cov lej; qhov tshwm sim yog qhov sum ntawm tag nrho. yog tus lej yog ntxiv sequentially los ntawm sab laug toright, ib qho nruab nrab tshwm sim yog ib feem sum, prefix sum, los yog khiav tag nrho ntawm cov summation.

Ib yam li ntawd, E ntawm cov fwj dej txhais li cas? Cov kos npe kwv yees, ℮, kuj hu ua tus e -kos lossis "quantité estimée" (Unicode U+212E), ua tau muaj nyob rau ntawm ib co pre-packed khoom nyob rau hauv cov teb chaws Europe thiab Australia. Nws siv qhia tau hais tias lub ntim ua tiav EuropeanUnion Directive 2009/34/EC.

Kuj tseem yuav paub, E hauv cov txheej txheem txhais li cas?

Lub cim ∈ txhais tau tias "yog ib feem ntawm." Nws tshwm nyob rau hauv teeb kev xav. A teeb muaj ntau yam. Thaum koj pom ib yam dab tsi zoo li "a ∈S", koj tuaj yeem nyeem cov lus hais tias "a yog ib qho tseem ceeb ntawm teeb S." Piv txwv li, peb yuav xaiv ib tug teeb T as the teeb uas muaj cov ntsiab lus a andb.

Dab tsi thiab kuv oop txhais li cas?

Thiab kuv oop ua yog kab lus kab mob los ntawm cov yeeb yaj kiab los ntawm dragqueen Jasmine Masters. Nws tau dhau los ua stereotyped raws li acatchphrase ntawm VSCO ntxhais. Thiab kuv oop ua los yog kuv oop ua beplayfully siv los qhia kev poob siab, surprise, orembarrassment.

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