IMLN Function in Excel – Get the Natural Logarithm of a complex number

IMLN Function in Excel returns the Natural Logarithm of a supplied complex number.

The Natural Logarithm of a complex number z = x + iy is calculated by the equation,

IMLN Function in Excel 0

 

Syntax of IMLN Function in Excel 

IMLN( inumber )

Where inumber argument is a Complex Number.

 

Example of IMLN Function in Excel

Formula

IMLN Function in Excel 1

  • From Row number 2 to 5 IMLN Function takes up complex number as a reference
  • In row number 6 IMLN Function takes up complex number(imaginary component) as a value which should be enclosed in double quotes
  • In row number 7 IMLN Function takes up real component as a value.

Result

IMLN Function in Excel 2

NOTE: #NUM! – Error occurs if,

  • supplied inumber argument is not recognized as a complex number.

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