# Manuals/calci/IMLOG2

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**IMLOG2(Complexnumber)**

- is of the form

## Description

- This function gives the binary logarithm of a complex number.
- , where Complexnumber is in the form of . i.e. & are the real numbers.
- And is the imaginary unit ..
- Binary logarithm is the inverse function of the Power of two functions.
- Log base 2 is called Binary logarithm.
- To find the Binary logarithm of a complex number we have to calculate from the natural logarithm.
- So .
- We can use COMPLEX function to convert real and imaginary number in to a complex number.

## ZOS

- The syntax is to calculate Binary logarithm of a complex number is .
- is of the form .

- For e.g imlog2("2.1-3.5i")

## Examples

- =IMLOG2("2+3i") = 1.85021985921295+1.41787163085485i
- =IMLOG2("5-6i") = 2.96536866900967-1.26388460522614i
- =IMLOG2("15") = 3.90689059590921
- =IMLOG2("11i") = 3.45943161890355+2.26618007108801i
- =IMLOG2("0") = NULL