The ezplot(f) calling sequence plots the expression f.

xmin and xmax denote the left and right endpoints of the horizontal range.  When omitted, the default range is 0 .. 2*Pi.  ymin and ymax denote the vertical endpoints.

When two expressions are given as the first two arguments in the ezplot calling sequence, an plots[implicitplot] of f(t) and g(t) is generated.

The default range of t when tmin and tmax are not specified is 0 .. 2*Pi.

When f or g are not functions of x, y, or t, indets is used to find the indeterminates.  The range limits correspond to the order of alphabetically sorted indeterminates.  

$\mathrm{with}\left(\mathrm{MTM}\right)\:$

$\mathrm{ezplot}\left(\cos \left(\frac{x}{2}\right)+\sin \left(2x\right)\right)$

$\mathrm{ezplot}\left(\cos \left(\frac{x}{2}\right)+\sin \left(2x\right)\,\left[0\,4\mathrm{\pi }\right]\right)$

$\mathrm{ezplot}\left(x^2+y^2=1\right)$

$\mathrm{ezplot}\left(x^2+y^2=1\,\left[-1.1\,1.1\right]\right)$

$\mathrm{ezplot}\left(\sin \left(t\right)\,\cos \left(t\right)\right)$

$\mathrm{ezplot}\left(\sin \left(t\right)\,\cos \left(t\right)\,\left[0\,\mathrm{\pi }\right]\right)$

$\mathrm{ezplot}\left(\frac{t^2-1}{t^2+1}\,\frac{2t}{t^2+1}\,\left[-\mathrm{\infty }\,\mathrm{\infty }\right]\right)$