Tus lej Scottish John Napier John Napier John Napier, Napier kuj sau Neper, (yug xyoo 1550, Merchiston Castle, ze Edinburgh, Scot. -tuag Lub Plaub Hlis 4, 1617, Merchiston Castle), Scottish mathematician thiab tus kws sau ntawv theological uas tau pib lub tswv yim ntawm logarithms ua cov cuab yeej ua lej los pab hauv kev suav. https://www.britannica.com › biography › John-Napier
John Napier | Scottish mathematician | Britannica
luam tawm nws qhov kev tshawb pom ntawm logarithms hauv 1614. Nws lub hom phiaj yog los pab kev sib npaug ntawm cov khoom uas tau hu ua sine.
Leej twg tsim cov lus suav?
Tus ancient Babylonians yog thawj kab lis kev cai tsim cov rooj sib npaug, ntau dua 4,000 xyoo dhau los. Lawv tau ua lawv cov lej ntawm cov ntsiav tshuaj av nplaum, qee qhov tau muaj sia nyob txog niaj hnub no. Raws li lawv txoj kev vam meej loj hlob tuaj, lawv yuav tsum tau ua lej ntau dua los pab lawv tsim thiab ua lag luam.
Leej twg tsim lub Antilogarithm?
Logarithms thiab lawv lub npe tau tsim los ntawm tus lej Scottish JOHN NAPIER, Tswv ntawm Merchiston (1550-1617) kuj hu ua NEPER. Napier luam tawm thawj lub rooj ntawm logarithms hauv 1614 (cf. np[l]). Lub sij hawm logarithm yog muab los ntawm Greek: >.
4 txoj cai ntawm logarithms yog dab tsi?
Logarithm Cov Cai lossis Cov Cai Log
- Muaj plaub tus qauv lej logarithm hauv qab no: ● Txoj Cai Khoom Muag:
- loga (MN)=loga M + loga N. ● Quotient Rule Law:
- loga (M/N)=loga M - loga N. ● Hwj chim Txoj cai lij choj:
- IogaM =n Ioga M. ● Change of base Rule Law:
Yuav siv logarithms li cas hauv lub neej tiag?
Siv Logarithmic Functions
Ntau lub zog ntawm logarithms yog lawv cov txiaj ntsig hauv daws qhov sib npaug sib npaug. Qee qhov piv txwv ntawm qhov no suav nrog lub suab (decibel ntsuas), av qeeg (Richter nplai), qhov ci ntawm cov hnub qub, thiab chemistry (pH tshuav, ntsuas acidity thiab alkalinity).