General ⇒ Displaying mathematical functions

[avp3000]

Hi,

I want to ask whether there is a way in LaTeX for displaying graphics of mathematical functions where I do not need to draw them manually, but just give the definition (like f[x]:=2x^2+3x-2), as well as the intervalls. I am asking this, because sometimes I have to perform lots of mathematical calculations in order to find the coordinates, where two functions cross (since I am drawing them manually), whereas if I just define the functions and display them, than their crossing point would be displayed automatically. I know that this is possible for some trigonometric functions, but what about more general ones? Thank you very much in advance.

[localghost]

Take a look at pgf/tikZ or pstricks. The manuals will tell you how to generate such graphs. In case of occuring difficulties, feel free to ask.


Best regards and welcome on Board
Thorsten

[balf]

In pstricks, there is \psplot with 3 arguments : xmin, xmax and the function itself. Using pstricks-add with the option 'algebraic', you can use standard notation for your function, instead of postscript postfixed notation. Moreover, pst-func has predefined commands for polynomials, Fourier sums, Bessel functions, and pst-math defines some other functions (hyperbolic, gamma, and so on).

You also can make parametric or polar plots.

B.A.