such as ☑f_{1}(t)=
accept a wide variety of mathematical expressions.
The variable x is allowed in the expression, as indicated in the field label.
Names of functions defined in these fields can also be used in the fields -- for example, the function
f_{2}(x) can be used in defining the function f_{1}(x),
by including the expression "f2(x)" in the input field for f_{1}(x).
The checkbox determines whether the associated graph object is included in the graph.
Click the field label to change the color of the associated graph object. The current color of the graph object
is indicated by the color of the field label.

Buttons

Graph

-- redraw or refresh the graph using current field values.

Clear

-- set all fields to default values and redraw the graph.

Buttons under the graph

Zoom In

-- redraw graph, zoomed in by a factor of 2.

Zoom Out

-- redraw graph, zoomed out by a factor of 2.
Click on the graph to select the center point for the zooming region.
On the graph, the center point is indicated with the mouse until the point is chosen with a mouse click.

Mouse

-- show the graphing coordinates of the mouse position,
in the upper left corner of the graph.

Bounds

-- displays a pop-up window to set graphing x-axis and y-axis bounds and marks.

"Bounds" pop-up window

\(x_{min}=\)

\(x_{max}=\)

\(\Delta_x=\)

\(y_{min}=\)

\(y_{max}=\)

\(\Delta_y=\)

OK

Std

Apply

Cancel

All fields accept real numbers in decimal notation.

\(x\)-axis is drawn from \(x_{min}\) to \(x_{max}\),
with marks every \(\Delta_x\).

\(y\)-axis is drawn from \(y_{min}\) to \(y_{max}\),
with marks every \(\Delta_y\).

Buttons in the pop-up window

OK

-- redraw the graph using current values of fields, and close the window.

Std

-- redraw the graph using default values of fields (window stays open).

Apply

-- redraw the graph using current values of fields (window stays open).

Cancel

-- close the window without changing field values used to draw the graph.