HP 49g+ - Manual (Page 61)

Page 3-8
Finally, in order to select, for example, the hyperbolic tangent (tanh) function,
simply press
@@TANH@.
Note: To see additional options in these soft menus, press the
L key or
the „«keystroke sequence.
For example, to calculate tanh(2.5), in the ALG mode, when using SOFT
menus over CHOOSE boxes, follow this procedure:
„´@@HYP@ @@TANH@ 2.5`
In RPN mode, the same value is calculated using:
2.5`„´)@@HYP@ @@TANH@
As an exercise of applications of hyperbolic functions, verify the following
values:
sinh (2.5) = 6.05020.. sinh -1 (2.0) = 1.4436…
cosh (2.5) = 6.13228.. acosh -1 (2.0) = 1.3169…
tanh (2.5) = 0.98661.. tanh -1 (0.2) = 0.2027…
expm(2.0) = 6.38905…. lnp1(1.0) = 0.69314….
Operations with units
Numbers in the calculator can have units associated with them. Thus, it is
possible to calculate results involving a consistent system of units and produce
a result with the appropriate combination of units.
The UNITS menu
The units menu is launched by the keystroke combination ‚Û(associated
with the 6 key). With system flag 117 set to CHOOSE boxes, the result is
the following menu: