Thaum twg yog Egyptian txoj kev sib npaug tsim?
Thaum twg yog Egyptian txoj kev sib npaug tsim?

Video: Thaum twg yog Egyptian txoj kev sib npaug tsim?

Video: Thaum twg yog Egyptian txoj kev sib npaug tsim?
Video: qhia txog koom haum nas tauj dag russia thiab ukriane sib tua 2024, Kaum ib hlis
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Cov txheej txheem yog paub rau peb los ntawm Moscow thiab Rhind 2 Mathematical Papyri sau nyob rau hauv lub xyoo pua 17th BC. Ancient Egyptian multiplication method rau kev sib npaug ob tus lej tsuas yog siv lub peev xwm ntau thiab faib los ntawm 2, thiab ntxiv.

Xav txog qhov no, dab tsi yog Egyptian multiplication method?

Nyob rau hauv lej, ancient Egyptian multiplication (tseem hu ua Egyptian multiplication , Ethiopian kev sib npaug , lus Russian kev sib npaug , los yog neeg ua teb kev sib npaug ), ib ob txoj kev sib npaug siv los ntawm cov kws sau ntawv, yog ib qho systematic txoj kev rau kev sib npaug ob tus lej uas tsis xav tau kev sib npaug rooj, Cov neeg Iyiv thaum ub tau muab ob tus lej tag nrho li cas? Egyptian Multiplication . Cov Cov neeg Iyiv thaum ub siv txoj kev xav paub muab ob tug lej . Lub algorithm kos rau ntawm binary system: kev sib npaug los ntawm 2 , los yog ntxiv ib tus lej ob nws tus kheej. Cov ob xiav tus lej nyob rau sab saum toj - cov multiplicands - tuaj yeem hloov kho los ntawm txhaj rau lawv tus lej.

Tsis tas li ntawd nug, cov ntawv lej dab tsi uas cov neeg Iyiv thaum ub tau tsim?

Cov Cov neeg Iyiv thaum ub yog thawj kev vam meej los txhim kho thiab daws qhov kev sib npaug thib ob (quadratic). Cov ntaub ntawv no muaj nyob rau hauv Berlin Papyrus fragment. Tsis tas li ntawd, lub Cov neeg Iyiv daws thawj-degree algebraic equations pom nyob rau hauv Rhind lej Papyrus.

Leej twg yog tus tsim ntawm kev sib npaug?

Plaub txhiab xyoo dhau los, cov neeg Npanpiloo invented multiplication.

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