HP manual Differences between the HP 38G and the HP 39G/40G, Memory manager Plot Goto function

Differences between the HP 38G and the HP 39G/40G

CAS

Memory manager

Plot Goto function

The HP 40G is packaged with*272acomputer algebra system

(CAS). Refer to the CAS Manual for further information.

The HP 39G/40G incorporates memory manager that you can use to see how much memory the objects that you have created or loaded are occupying. See “Memory Manager” on page 11-9 for more information.

In Plot view, you can use the menu key to jump to a

value on the plot instead of having to trace the plot to locate values. See “Exploring the graph” on page 2-7 for more information.

Statistics Pred function

When you choose the ),7aoption in the Statistics aplet’s Plot view screen, it is now possible to 75$&(aalong the regression curve. Once a data set and regression curve is displayed, pressing the up and down arrows will move between the data and the curve of regression. When the regression curve is selected, the values displayed in the Plot view status line are the PREDY values. On the HP 38G, the Trace function would select known data points only.

Inference aplet To complement the Statistics aplet, a new Inference aplet has been added. Use this aplet to perform hypothesis tests and determine confidence intervals. See “About the Inference aplet” on page 9-1 for more information.

Trig Explorer and Quadratic Explorer aplets

The teaching aplets Trig Explorer and Quadratic Explorer have been added to the calculator. These two aplets add powerfully to the capabilities of the calculator in the classroom.

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