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Finally, in order to select, for example, the hyperbolic tangent (tanh) function,
simply press
@@TAH@
.
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:
„´
@@HP@ @@TAH@
2.5`
In RPN mode, the same value is calculated using:
2.5`„´)@@HP@ @@TAH@
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: