HP 39g hp 39g+ (39g & 40g)_mastering the hp 39g+_English_E_F2224-90010.pdf - Page 16
Some Keyboard Examples, Function - + calculator
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SOME KEYBOARD EXAMPLES Shown below are snapshots of some typical screens you might see when you press each of the keys shown on the previous page. Exactly what you see depends on which aplet is active at the time. The aplet used below to illustrate this is the Function aplet, which is used to graph and analyze Cartesian functions. Notice how the meanings of the row of blank screen keys under the screen changes in different views. The SYMB key - in this case it is set to graph the function y = x3 − x2 − 7x + 6 . The PLOT key - used to graph the function. The NUM key showing a tabular view of the function. The APLET key is used to choose which aplet is active. There are 10 aplets provided with the calculator and more can be downloaded from the internet. The MATH key gives access to more than a hundred extra functions, grouped by category. The view shown right is currently showing the Probability section. 16