Returns the base-2 logarithm of a complex number.

inumberThe complex number for which you want the base-2 logarithm.

* If "inumber" is not in the form x + yi or x + yj, then #NUM! is retruned.
* You can use the IMLN function to return the natural logarithm of a complex number.
* You can use the IMLOG10 function to return the base-10 logarithm of a complex number.
* You can use the COMPLEX function to convert real and imaginary coefficients into a complex number.
* For the Microsoft documentation refer to
* For the Google documentation refer to

1=IMLOG2("3+4i") = 2.32192809488736+1.33780421245098i
2=IMLOG2("3+4j") = 2.32192809488736+1.33780421245098j
3=IMLOG2("3i") = 1.58496250072116+2.2661800709136i
4=IMLOG2("3") = $1.58
5=TEXT(IMLOG2("3"), "0.000") = 1.585
6=IMLOG2("some text") = #NUM!

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