A plot in Cartesian coordinate system in Mathcad is a blank sample in form of a large rectangle with dark small rectangles, located at the abscissa and ordinate axes of the future plot.
The name of argument x of abscissa axis and the name of function y of ordinate axis should be entered in the middle rectangles. If plots of a few functions are being built in Mathcad within one single sample, then their names while being entered should be parted with commas. The ultimate dark small rectangles are in use to enter the limiting values of abscissas and ordinates, i.e. they assign the scale of the plot. These samples left vacant, Mathcad will set scales in axes automatically. But automatically set scales can appear to be rather inconvenient. That is why, it is recommended to use automatic scaling first, but then change data into the more suitable ones. The listing shows the example of plot construction.
In order to perform plot construction in the automatic mode of Mathcad calculations, it is recommended to move cursor outside the graphic object. Image parameters (colour and lineweight, coordinate grid, axes marking, plot inscriptions) are the easiest to change by double clicking the plot field. As a result the dialogue box “Format”, is activated, Mathcad allows choosing the appropriated inlay and setting up the parameters. It is possible to show plots of functions of different variables in one sample. In this case, the number of variables, their names and sequence order should be synchronized.