Koj ua haujlwm li cas logarithmic ntawm lub tshuab xam zauv?
Koj ua haujlwm li cas logarithmic ntawm lub tshuab xam zauv?

Video: Koj ua haujlwm li cas logarithmic ntawm lub tshuab xam zauv?

Video: Koj ua haujlwm li cas logarithmic ntawm lub tshuab xam zauv?
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Nyob rau graphing tshuab xam zauv ,pab e logarithm yog cov ln tus yuam sij. Tag nrho peb yog tib yam. Yog tias koj muaj lub logBASE muaj nuj nqi , nws tuaj yeem siv los nkag rau hauv muaj nuj nqi (saib hauv Y1 hauv qab no). Yog tias tsis yog, siv qhov hloov pauv ntawm Base formula (saib hauv Y2 hauv qab).

Ib yam li ntawd, logarithmic functions yog dab tsi?

Logarithmic muaj nuj nqi yog cov inverses ntawm exponential muaj nuj nqi . Lub inverse ntawm exponential muaj nuj nqi y = ibx yog x = ay. Cov logarithmic muaj nuj nqi y = logax yog txhais kom sib npaug rau qhov kev sib npaug exponential x = ay. y = logax tsuas yog hauv qab no: x = ay, a > 0, thiab a≠1.

Ib yam li ntawd, logarithm hauv cov ntsiab lus yooj yim yog dab tsi? A logarithm yog lub hwj chim uas tus lej yuav tsum tau tsa kom tau txais lwm tus lej (saib Tshooj 3 ntawm Qhov Kev Ntsuam Xyuas Lej no kom paub ntxiv txog tus lej). Piv txwv li, lub hauv paus kaum logarithm ntawm 100 yog 2, vim kaum tsa rau lub zog ntawm ob yog 100: log 100 = 2.

Ib yam li ntawd, tib neeg nug, qhov piv txwv ntawm logarithmic ua haujlwm yog dab tsi?

Logarithm , tus exponent los yog lub hwj chim uas lub hauv paus yuav tsum tau tsa kom yield ib tug muab. Qhia lej, x yog tus logarithm ntawm n mus rau hauv paus b yog bx = n, qhov twg ib tug sau x = logb n. Rau piv txwv , 23 = 8; yog li ntawd, 3 yog qhov logarithm ntawm 8 rau hauv paus 2, lossis 3 = log2 8.

Lub log yog dab tsi?

Logarithm ntawm ib yam khoom Nco ntsoov tias lub khoom ntawm exponents thiab logarithms zoo sib xws heev. Nrog exponents, kom muab ob tug lej nrog tib lub hauv paus, koj ntxiv cov exponents. Nrog logarithms , lub logarithm ntawm cov khoom yog qhov sib npaug ntawm cov logarithms.

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