Functions
KmPlot works with several different types of functions, which can be written in function form or as an equation: * Cartesian plots can be written either as e.g. ‘y = xˆ2’, where x has to be used as the variable or as e.g. ‘f(a) = aˆ2’, where the name of the variable is arbitrary. * Parametric plots are similar to Cartesian plots. The x and y coordinates can be entered as equations in t, e.g. ‘x = sin(t)’, ‘y = cos(t)’, or as functions, e.g. ‘f_x(s) = sin(s)’, ‘f_y(s) = cos(s)’. * Polar plots are also similar to Cartesian plots. They can be entered either as an equation in j, e.g. ‘r = j’, or as a function, e.g. ‘f(x) = x’. * For implicit plots, the name of the function is entered separately from the expression relating the x and y coordinates. If the x and y variables are specified via the function name (by entering e.g. ‘f(a,b)’ as the function name), then these variables will be used. Otherwise, the letters x and y will be used for the variables. * Explicit differential plots are differential equations whereby the highest derivative is given in terms of the lower derivatives. Differentiation is denoted by a prime (’). In function form, the equation will look like ‘f”(x) = f’f’. In equation form, it will look like ‘y” = y’ y’. Note that in both cases, the ‘(x)’ part is not added to the lower order differential terms (so one would enter ‘f’(x) = f’ and not ‘f’(x) = f(x)’).Developers
*Klaus-Dieter Möller - Original Author *Matthias Meßmer - GUI * Fredrik Edemar - Various improvements * David Saxton - Porting to Qt 4, UI improvements, featuresReferences
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