Fa'amatalaga o le logarithm, ona uiga ma kalafi

Logarithm o se numera o le mana lea e tatau ona siitia i ai le tasi numera ina ia maua ai le isi.

Afai o le numera b i le tulaga y tutusa x:

by = x

O lea la o le logarithm o le numera x i le mafuaaga b is y:

y = logb(X)

Faataitaiga:

24 = 16

log2(16) = 4

lotomalie

Logarithm e pei ole galuega fa'afeagai ile fa'atele

galuega tau logarithmic y = logb(x) o le galuega fa'afeagai o le fa'asologa x=b y.

Afai la tatou te fa'atatauina le galuega fa'aopoopo o le logarithm x (x > 0), e foliga mai:

f (f -1(x)) = blogb(x) = x

Pe a tatou fa'atatauina le logarithm o le galuega fa'aopoopo х:

f -1(f (x)) = ogalaaub(bx) = x

Logarithm faanatura (ln)

O le logarithm masani o le logarithm faavae е.

ln (x) = ogalaaue(x)

nūmera e ose tumau e mafai ona faauigaina o se tapulaa:

Fa'amatalaga o le logarithm, ona uiga ma kalafi

Pe fa'apea:

Fa'amatalaga o le logarithm, ona uiga ma kalafi

Logarithm faafeagai

Logaritma faafeagai (po o le antilogarithm) o se numera n o se numera o logaritma faavae a e tutusa ma le numera n.

ogalaau loian = an

Lisi o meatotino o logarithms

O lo'o i lalo mea taua o logarithms i fa'asologa fa'asologa.

»fa'atonu-fa'atonu=»Fa'amatalaga o le logarithm, ona uiga ma kalafi«>Fa'amatalaga o le logarithm, ona uiga ma kalafiFa'amatalaga o le logarithm, ona uiga ma kalafi

»fa'atonu-fa'atonu=»Fa'amatalaga o le logarithm, ona uiga ma kalafi«>Fa'amatalaga o le logarithm, ona uiga ma kalafiFa'amatalaga o le logarithm, ona uiga ma kalafi

»fa'atonu-fa'atonu=»Fa'amatalaga o le logarithm, ona uiga ma kalafi«>Fa'amatalaga o le logarithm, ona uiga ma kalafiFa'amatalaga o le logarithm, ona uiga ma kalafi

»fa'atonu-fa'atonu=»Fa'amatalaga o le logarithm, ona uiga ma kalafi«>Fa'amatalaga o le logarithm, ona uiga ma kalafiFa'amatalaga o le logarithm, ona uiga ma kalafi

meatotinofomulafaataitaiga
Fa'asinomaga logarithmic faavaeLogarithm o le oloaVaega/quotient logarithmLogarithmic tikeriLogarithm o se numera i le faavae i le tikeri
logarithm a'a
Toe fa'atulagaina le fa'avae o le logarithmSuiga i se faavae fouFa'atupuina ole logarithmLogarithm tu'ufa'atasiLogarithm o se numera leagaLogarithm o se numera e tutusa ma le faavaeLogarithm o le le i'uЛогарифмическая функция

Функция, которая определена формулой f (x)= ogalaaua(x) – это логарифмическая функция с основанием a... Lea a>0, a≠1.

График функции логарифма

График логарифмической функции (логарифмика) может быть двух типов, в зависимости от значения основания a:

  • a > 1Fa'amatalaga o le logarithm, ona uiga ma kalafi
  • 0 < a < 1Fa'amatalaga o le logarithm, ona uiga ma kalafi
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