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Test view is like equation mode in that you use the change keys to select and change the value of each parameter in the equation.
The goal is to try to match the graph that is shown.
The menu items in test view are:
• : within each level of equation (see below) there are a number of difficult graphs. Tap this button to cycle
through them. A dot on the button ( ) indicates that you are testing yourself on one of the difficult graphs.
• : within each level of equation there are a number of less difficult graphs. Tap this
button to cycle through them. A dot on the button ( ) indicates that you are testing
yourself on one of the less difficult graphs.
• : chooses various forms of equation: there are two in the Linear Explorer and four in
the Quadratic Explorer
• : lets you check your current answer against the correct answer
• : displays the correct answer
• : returns to Plot view
Trig Explorer App
The Trig Explorer app enables you to explore the behavior of the sinusoidal equations y = a
.
sin(bx + c) + d and y = a
.
cos(bx + c)
+ d as the values of a, b, c, and d change. You can change the equation and note the change in the graph, or change the graph
and note the change in the equation. A graph can be changed using the cursor keys. It can also be translated by tapping on it
and then dragging it. To open the Trig Explorer app, press
I and select Trig Explorer.