Download Portrait 4: User`s Guide ()

Graphs of Equations
An equation is a mathematical sentence with an equal (=) sign.
Entering Data
1. Tap in one of the cells in the column labeled
equation.
2. Enter your equation. Use “^” for exponents and “*”
for multiplication.
3. Enter the x and the y limits that you want your
equation evaluated from and to.
4. Tap on the pencil icon to draw the graph of the
equation.
Note
The x and y limits that you want the equation evaluated from and to must be entered. If you do not
enter them, you will get a syntax error when you try to plot the equations.
If you are graphing more than one equation, the x and y limits do not have to be the same.
However, the largest set of limits is used for all equations so they fit on the same set of axes.
The equations you want evaluated can be comprised of integers, symbolic constants, decimal
numbers, or any functions or operations with numeric results.
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