HP 50g User Manual page 55

For example, in ALG mode, the keystroke sequence to calculate, say,
tanh(2.5), is the following:
„´4@@OK@@ 5@@OK@@ 2.5`
In the RPN mode, the keystrokes to perform this calculation are the
following:
2.5`„´4@@OK@@ 5@@OK@@
The operations shown above assume that you are using the default setting
for system flag 117 (CHOOSE boxes). If you have changed the setting of
this flag (see Chapter 2) to SOFT menu, the MTH menu will show as
follows (left-hand side in ALG mode, right – hand side in RPN mode):
Pressing L shows the remaining options:
Thus, to select, for example, the hyperbolic functions menu, with this menu
format press ) @ @HYP@ , to produce:
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