Manuals/calci/IMLN

IMLN(Complexnumber)

• $Complexnumber$ is of the form $z=x+iy$

Description

• This function gives the Natural Logarithm of a complex number.
• In $IMLN(Complexnumber)$, where Complexnumber is in the form of $z=x+iy$. i.e $x$ & $y$ are the real numbers.
• And $I$ is the imaginary unit $i={\sqrt {-1}}$.
• Normally Complex logarithm function is an inverse of the Complex exponential function.
• A logarithm of $z$ is a complex number $w$ such that $z=e^{w}$ and it is denoted by $ln(z)$.
• If Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle z = x+iy} with Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle x} & Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y} are real numbers then natural logarithm of a complex number :

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle ln(z)= w = ln(|z|) + iarg(z) = ln(\sqrt{x^2+y^2}+itan^{-1}(\frac{y}{x})} adding integer multiples of Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle 2\pi i} gives all the others.

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

ZOS

• The syntax is to calculate the natural logarithm of a complex number in ZOS is Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle IMLN(Complexnumber)} .
  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle Complexnumber} is of the form Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle z=x+iy}
• For e.g.,IMLN(("10+17i")

Natural Logarithm of a Complex Number

Examples

1. IMLN("3-2i")=1.28247467873077-0.588002603547568i
2. IMLN("6+7i")=2.22132562824516+0.862170054667226i
3. IMLN("4")=1.38629436111989 +0i
4. IMLN("10i")=2.30258509299405+1.5707963267949i

See Also

• IMLOG10
• IMLOG2
• COMPLEX

References

Imaginary Logarithms