The 'Tests' Group Of Functions; The 'Trigonometric' & 'Hyperbolic' Groups Of Functions - HP 39gs Master Manual
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These are all functions which are of interest only to programmers, and consequently we will not cover them
here. For anyone who has done any programming their use is obvious. They can also be found, far more
conveniently, in the
CHARS
A fairly thorough introduction to programming on the calculator is given in an later chapter (see page 255).
Those wanting more detail than is given there must consult the manual. One way to learn more about
programming is to download aplets from the internet and dismantle them to see how the code produces the
results.
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These two groups of functions cover the Trigonometry functions, plus others, which are less commonly used
and which have consequently not been given their own keys on the face of the calculator. Use them in the
same way as the normal
COT, SEC etc
In the Trig. group of functions you will find:
Function
(cotangent)
COT
(cosec/cosecant)
CSC
(secant)
SEC
In the Hyperb. group of functions you will find (amongst other things):
Function
(hyperbolic sine or "shine")
SINH
(hyperbolic cos or "cosh")
COSH
(hyperbolic tan)
TANH
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view.
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and
functions.
SIN, COS
TAN
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Inverse function
(arc-cotangent)
ACOT
(arc-cosec)
ACSC
(arc-secant)
ASEC
Inverse function
(arc-hyp.sine)
ASINH
(arc-hyp.cos)
ACOSH
(arc-hyp.tan)
ATANH
182
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