Difference between revisions of "Manuals/calci/ERF"

Revision as of 22:45, 25 December 2013

ERF(ll,ul)

This function gives the value of the error function .
Error function is the special function which is encountered in integrating the normal distribution.
In $ERF(ll,ul),ll$ is the lower limit of the integrating function and $ul$ is the upper limit of the integrating function.
Also $ul$ is optional. When we are omitting the $ul$ value, then the integral of the error function between 0 and the given $ll$ value is returned otherwise it will consider the given $ll$ and $ul$ values.
This function is also called Gauss error function. $ERF$ is defined by: Failed to parse (unknown function "\limit"): {\displaystyle ERF(z)=\frac {2}{sqrt(pi()}\int\limit_{0}^{z}e^-t^2 dt}

<math> ERF(a,b)=\frac{2}{sqrt(pi()}\int\limit_{a}^{b}e^-t^2 dt=ERF(b)-ERF(a)(/math>.

@@ Line 8: / Line 8: @@
 *In <math>ERF(ll,ul),ll</math> is the lower limit of the integrating function and <math>ul</math> is the upper limit of the integrating function.
 *Also <math>ul</math> is optional. When we are omitting the <math>ul</math> value, then the  integral of the error function between 0 and the given <math>ll</math> value is returned otherwise it will consider the given <math>ll</math> and <math>ul</math> values.
-*This function is also called Gauss error function.<math>ERF </math>is defined by:                                                    <math>ERF(z)=\frac {2}{sqrt(pi()}\int\limit_{0}^{z}e^-t^2 dt
+*This function is also called Gauss error function.<math>ERF </math>is defined by:                                        <math>ERF(z)=\frac {2}{sqrt(pi()}\int\limit_{0}^{z}e^-t^2 dt</math>
-ERF(a,b)=\frac{2}{sqrt(pi()}\int\limit_{a}^{b}e^-t^2 dt=ERF(b)-ERF(a)(/math>.
+<math> ERF(a,b)=\frac{2}{sqrt(pi()}\int\limit_{a}^{b}e^-t^2 dt=ERF(b)-ERF(a)(/math>.
 *In this case 'a' is the lower limit and 'b' is the upper limit.
 *This function will return the result as error when