HP 48gII Uživatelský manuál stáhnout pdf (Strana 61)

Page 3-8

Finally, in order to select, for example, the hyperbolic tangent (tanh) function,

simply press

@@TAH@

Note: To see additional options in these soft menus, press the

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:

„´

@@HP@ @@TAH@

2.5`

In RPN mode, the same value is calculated using:

2.5`„´)@@HP@ @@TAH@

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

key). With system flag 117 set to CHOOSE boxes, the result is

the following menu:

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 174 175

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HP 48gII Uživatelský manuál Strana 61