=IMLOG10(number)
        IMLOG10("3+4i") 
The function returns the logarithm (base 10) of a complex number, and will return the logarithm (base 10) for 3+4i, which is 0.4771212547196624.
IMLOG10("3+4j") 
The function can also be used to return the logarithm (base 10) of a complex number such as 3+4j. In this case, the formula would return the logarithm (base 10) for 3+4j, which is 0.4771212547196624.
The IMLOG10 function is used to calculate the common logarithm of a complex number. It requires a complex number as an input.