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This chapter demonstrates Mathematica capability to generate graphs. We start with its basic command Plot and expose its ability to add text into figures. To place a text inside a figure, Mathematica has a special command Text[expr, coordinates, offset] that specifies an offset for the block of text relative to the coordinate given. Providing an offset < dx, dy >specifies that the point ( x, y ) should lie at relative coordinates < dx, dy >within the bounding rectangle that encloses the text. We demonstrate it with the following codes:
Plot[Sin[x] - Cos[3*x]/3,
The following table of graphs can be displayed using GraphicsGrid command. GraphicsGrid by default puts a narrow border around each of the plots in the array it gives. You can change the size of this border by setting the option Spacings -> < h, v>. The parameters h and v give the horizontal and vertical spacings to be used. The Spacings option uses the width and height of characters in the default font to scale the h and v parameters by default, but it is generally more useful in graphics to use Scaled coordinates. Scaled scales widths and heights so that a value of 1 represents the width and height of one element of the grid.
