14
14
The three specialized Solvers—outlined in Table 2—are designed to help you solve problems of a specific type.
Three apps are specifically designed to help you explore the relationships between the values of the parameters in a function and
the shape of the graph of the function. See Table
3 below.
Data persistence
When you work with an app you enter data of one sort or another, such as definitions of functions, window settings, and
preferences. The app records all this data and automatically saves it for you. If you leave the app and come back to it later, all
that data is still there. In fact, you can save an instance of the app with a new name and keep the original version for another
purpose. The new version, under the new name, contains all the data from the source app. (This is explained in chapter
6,
“Creating Customized Apps” on page 52.)
If you don’t want to retain the data stored with an app when you next open the app, you can reset the app to its default values
and settings. With the
Application Library displayed (I), use the cursor keys to highlight the app you want to reset, and then
tap
. Confirm your intention to reset the app by tapping or pressing
E
.
Table 2: HP Solver Apps
Solver App Name Purpose
Finance Solve time-value-of-money (TVM) and amortization problems
Linear Solver Solve 2 × 2 and 3 × 3 systems of linear equations
Triangle Solver Solve problems involving the lengths of sides, and the measures of angles, in triangles
Table 3: HP Explorer Apps
Explorer App Name Purpose
Linear Explorer Explore the relationship between the shape of the graph and values of the parameters in linear functions
Quadratic Explorer Explore the relationship between the shape of the graph and values of the parameters in quadratic functions
Trig Explorer Explore the relationship between the shape of the graph and values of the parameters in sinusoidal functions
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