Problem:
Graph the curve represented by the following pair of parametric equations:

x = 2 cos3(t), y = 2 sin3(t)

This curve is called a hypocycloid of four cusps.

Visualization:
Using MPP:
  1. Choose Item 1 - MPP (Mathematics Plotting Program from the initial menu and press .
  2. Enter the bounds
    Xmin : -2.1 Xmax : 2.1
    Ymin : -2.1 Ymax : 2.1 .
  3. At the prompt 1. y=f(x) ==>, press until the prompt 1. x=f(t) ==> appears.
  4. Enter the function
    2(cos(t))^3
  5. At the prompt y=g(t) ==>, enter the function
    2(sin(t))^3
  6. Enter the bounds
    tmin : 0 tmax : 6.14
    .
  7. Press to display the graph of the functions.