How do you work out maths log?

Answer 1

The logarithm function is related to a base. The function itself is the reverse of the power exponential function. With a few exceptions, you will need to use a scientific calculator or computer to find the log of a number. Older readers may know of with log books - tables of logs.

In base 10, therefore,

if 10a = b then log10b = a

So for example,

103 = 1000 so log10(1000) = 3

102.5 = 316.23 so log10316.23 = 2.5

The two bases in common use are base 10 and base e (e is the transcendental number that is approx 2.71828).

Logarithms to base 10 are normally written simply as log, or log10 if there is any risk of confusion. Logs to base e are written ln (rarely loge). ln stands for natural logs and is pronounced lun (to rhyme with sun).

The logarithm function is related to a base. The function itself is the reverse of the power exponential function. With a few exceptions, you will need to use a scientific calculator or computer to find the log of a number. Older readers may know of with log books - tables of logs.

In base 10, therefore,

if 10a = b then log10b = a

So for example,

103 = 1000 so log10(1000) = 3

102.5 = 316.23 so log10316.23 = 2.5

The two bases in common use are base 10 and base e (e is the transcendental number that is approx 2.71828).

Logarithms to base 10 are normally written simply as log, or log10 if there is any risk of confusion. Logs to base e are written ln (rarely loge). ln stands for natural logs and is pronounced lun (to rhyme with sun).

The logarithm function is related to a base. The function itself is the reverse of the power exponential function. With a few exceptions, you will need to use a scientific calculator or computer to find the log of a number. Older readers may know of with log books - tables of logs.

In base 10, therefore,

if 10a = b then log10b = a

So for example,

103 = 1000 so log10(1000) = 3

102.5 = 316.23 so log10316.23 = 2.5

The two bases in common use are base 10 and base e (e is the transcendental number that is approx 2.71828).

Logarithms to base 10 are normally written simply as log, or log10 if there is any risk of confusion. Logs to base e are written ln (rarely loge). ln stands for natural logs and is pronounced lun (to rhyme with sun).

The logarithm function is related to a base. The function itself is the reverse of the power exponential function. With a few exceptions, you will need to use a scientific calculator or computer to find the log of a number. Older readers may know of with log books - tables of logs.

In base 10, therefore,

if 10a = b then log10b = a

So for example,

103 = 1000 so log10(1000) = 3

102.5 = 316.23 so log10316.23 = 2.5

The two bases in common use are base 10 and base e (e is the transcendental number that is approx 2.71828).

Logarithms to base 10 are normally written simply as log, or log10 if there is any risk of confusion. Logs to base e are written ln (rarely loge). ln stands for natural logs and is pronounced lun (to rhyme with sun).

Answer 2

The logarithm function is related to a base. The function itself is the reverse of the power exponential function. With a few exceptions, you will need to use a scientific calculator or computer to find the log of a number. Older readers may know of with log books - tables of logs.

In base 10, therefore,

if 10a = b then log10b = a

So for example,

103 = 1000 so log10(1000) = 3

102.5 = 316.23 so log10316.23 = 2.5

The two bases in common use are base 10 and base e (e is the transcendental number that is approx 2.71828).

Logarithms to base 10 are normally written simply as log, or log10 if there is any risk of confusion. Logs to base e are written ln (rarely loge). ln stands for natural logs and is pronounced lun (to rhyme with sun).