LN function

Description

Natural logarithm function. LN(x) returns the natural logarithm of the positive number x to base e (e=2.718281828). The argument x must be greater than 0. LN is the inverse function of EXP.

The argument x can be a real number, a complex number, or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the LN function applied to all elements.

Example

LN(10) equals 2.3026

Calculator

Graph

Function:	LN()
	X-axis	Y-axis
Minimum:	Minimum X	Minimum Y
Maximum:	Maximum X	Maximum Y

Enter the argument(s) for the function, including the symbol x.
Enter the minimum and maximum for the X-axis and for the Y-axis.
To let the software define the Y-axis automatically, leave both input fields for the Y-axis empty.

Graph LOG and LN

Related functions

• EXP function: natural exponential function.
• LOG logarithm function to base 10.
• List of Mathematical functions

External links

• Natural logarithm on Wikipedia.