Changes

==Description==

==Description==

*This function gives the natural logarithm of a complex number.

*This function gives the Natural Logarithm of a complex number.

*In IMLN(z),Where z is the complex number in the form of "x+iy".i.e. x&y 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.

*'I' imaginary unit .i=sqrt(-1).

*<math>I</math> imaginary unit <math>i=sqrt{-1}<math>.

*A logarithm of z is a complex number w such that z = e^w and it is denoted by ln(z).  

*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 z = x+iy with x&y are real numbers then natural logarithm of a complex number : <math>ln(z)= w = ln(|z|) + iarg(z)                                                                                                                                             =ln(sqrt(x^2+y^2)+itan^-1(y/x</math> adding integer multiples of 2πi gives all the others.

*If <math>z = x+iy</math> with <math>x<math> & <math>y</math> are real numbers then natural logarithm of a complex number :  

*We can use COMPLEX function to convert   real and imaginary number in to a complex number.  

<math>ln(z)= w = ln(|z|) + iarg(z) = ln(\sqrt{x^2+y^2}+itan^{-1}(\frac{y}{x}</math>                                                                                                                           adding integer multiples of <math>2\pi i</math> gives all the others.

*We can use COMPLEX function to convert real and imaginary number in to a complex number.

 

==Examples==

==Examples==