[pstricks] inverse functions

[Bhaskaracharya Pratishthana]

Thanks!

I appriciate your valuable help. Your code run very well.
To understand it more clearly, I need to know more about atan function 
in postscript.
Where I can get more information about all the functions availble with 
PSTRICKS?

regards,
Manjusha Joshi

Herbert Voss wrote:
> Bhaskaracharya Pratishthana sagte:
> 
> 
>>I used pst-plot to draw functions and trignometric functions.
>>How to draw inverse trignometric functions.?
>>e.g.cos inverse etc
> 
> 
> PostScript doesn't know the arccos, so you have to do
> it with the atan function.
> 
> Herbert
> 
> 
> \documentclass{article}
> \usepackage{amsmath}
> \usepackage{pst-plot}
> \begin{document}
> \psset{xunit=2}
> \begin{pspicture}(-1.5,-5)(1.5,3)
> 	\psaxes{->}(0,0)(-1.5,-5)(1.5,3)
> 	\psplot[plotpoints=500, linewidth=1.5pt]%
> 		{-1}{1}{/k 3.141 180 div def
> 			x dup dup mul neg 1 add sqrt atan k mul neg 1.56 add}
> 	\psplot[plotpoints=500, linewidth=1.5pt]% the nagative values of the root
> 		{-1}{1}{/k 3.141 180 div def
> 			x dup dup mul neg 1 add sqrt neg atan k mul neg 1.56 add}
> 	\uput[-45](1.25,0){$x$}
> 	\uput[180](0,3.25){$y$}
> 	\rput[l](0.4,2){$\mathbf{f(x)=\arccos x}$}
> \end{pspicture}
> 
> \end{document}
> 
>