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*This function gives the Natural Logarithm of a complex number.
*This function gives the Natural Logarithm of a complex number.
*In IMLN(z), where <math>z</math> is the complex number in the form of <math>x+iy</math>. i.e <math>x</math> & <math>y</math> are the real numbers.
*In IMLN(z), where <math>z</math> is the complex number in the form of <math>x+iy</math>. i.e <math>x</math> & <math>y</math> are the real numbers.
*<math>I</math> imaginary unit <math>i=sqrt{-1}</math>.
*<math>I</math> imaginary unit <math>i=\sqrt{-1}</math>.
*A logarithm of <math>z</math> is a complex number w such that <math>z = e^w</math> and it is denoted by <math>ln(z)</math>.
*A logarithm of <math>z</math> is a complex number w such that <math>z = e^w</math> and it is denoted by <math>ln(z)</math>.
*If <math>z = x+iy</math> with <math>x</math> & <math>y</math> are real numbers then natural logarithm of a complex number :
*If <math>z = x+iy</math> with <math>x</math> & <math>y</math> are real numbers then natural logarithm of a complex number :