Related Function:

The IMLOG2 function returns the base-2 logarithm of a complex number in x + yi or x + yj text format.

### Syntax

=IMLOG2(inumber)

#### Arguments

Argument | Description |
---|---|

inumber | A complex number for which you want the base-2 logarithm |

Note: Use the COMPLEX function to convert real and imaginary coefficients into a complex number.

#### Examples

A | B | C | D | |
---|---|---|---|---|

1 | Data | Formula | Result | Notes |

2 | 3+4i | =IMLOG2(A2) | 2.32192809488736+1.33780421245098i | Base-2 logarithm of 3+4i |

3 | =IMLOG2(“3+4i”) | 2.32192809488736+1.33780421245098i | ||

4 | =IMLOG2(“2-i”) | 1.16096404744368-0.668902106225488i | ||

5 | =IMLOG2(COMPLEX(4,1)) | 2.04373142062517+0.353429502416735i |

#### Common Function Error(s)

Problem | What went wrong |
---|---|

#NUM! | Occurs if the supplied inumber argument is not recognized as a complex number |

#NAME? | Occurs when Analysis ToolPak add-in is not enabled |

The base-2 logarithm of a complex number can be calculated from the natural logarithm as follows:

See Wikipedia for more information on complex numbers.