Sharp OZ-707 Operation Manual - Page 50

Scientific, Mathe, Matical Calculations

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7. SCIENTIFIC & MATHE- MATICAL CALCULATIONS The Card has a wide range of built-in functions for scientific, mathematical and statistical calculations. They are listed below alphabetically. All the functions listed below can be used as part of calculations when using the Card in RUN mode. They may also be used as BASIC commands within programs. For trigonometric functions, entries can be made in degrees, radians or as a gradient value, as appropriate: DEGREE: Set the Card to degree entry mode by typing DEGREE (DEG is highlighted on the MODE CHECK display), this is the default mode. RADIAN: Set the Card to radian entry mode by typing RADIAN (RAD is highlighted on the MODE CHECK display). GRADIENT: Set the Card to gradient entry mode by typing in GRAD (GRAD is highlighted on the MODE CHECK display). These three modes (DEG, RAD, and GRAD) can also be set from within a program. Once one mode is set, all entries for trigonometric functions must be in the units set (degrees, radians, or gradient values) until the mode is changed either manually or from within a program. The mode setting is preserved even when the power is turned off. The examples given below are all for direct entry of the functions entered in degrees. Functions marked DBl can be used in both double-precision and single-precision modes. Functions marked SNG can be used only in single-precision mode, where double-precision arguments are first converted to a single-precision value and then used in calculations. Many functions can also be implemented by pressing the co ~responding function key. Functions marked (*) have no corresponding key and must be entered through the keyboard. 88 \*ABS Ixl Function: Absolute value DBl Remarks: Returns the absolute value of the numeric argument. The absolute value is the magnitude of the number irrespective of its sign. ABS-10 is 10. Example: ASS -10 IENTER I 10 lACS Function: Inverse or arc cosine I cos-'x DBl Remarks: Returns the arc cosine of the numeric argument. The arc consine is the angle whose cosine is equal to the argument. The value returned depends on the mode (DEG, RAD or GRAD). Example: DEGREE IENTER I ACS -0.5 IENTER I 120 I*AHC cosh-'x I Function: Inverse hyperbolic cosine DBl Remarks: Returns the inverse hyperbolic cosine of the numeric argument. Example: AHC 10 IENTER I 2.993222846 I*AHS Function: Inverse hyperbolic sine I slnh-'x DBl Remarks: Returns the inverse hyperbolic sine of the numeric argument. Example: AHS 27.3 IENTER I 4.000369154 89

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7.
SCIENTIFIC
&
MATHE-
MATICAL CALCULATIONS
The Card has a wide range of built-in functions for scientific,
mathematical and statistical calculations. They are listed below
alphabetically. All the functions listed below can be used as part of
calculations when using the Card in RUN mode. They may also
be
used
as
BASIC commands within programs.
For trigonometric functions, entries can be made
in
degrees, radians or
as a gradient value, as appropriate:
DEGREE:
Set the Card to degree entry mode by typing DEGREE
(DEG
is
highlighted on the MODE CHECK display), this is
the default mode.
RADIAN:
Set the Card to radian entry mode by typing RADIAN
(RAD
is
highlighted on the MODE CHECK display).
GRADIENT: Set the Card to gradient entry mode by typing
in
GRAD
(GRAD is highlighted on the MODE CHECK display).
These three modes (DEG, RAD, and GRAD) can also be set from
within a program. Once one mode is set, all entries for trigonometric
functions must be in the units set (degrees, radians, or gradient values)
until the mode is changed either manually or from within a program.
The mode setting
is
preserved even when the power
is
turned off. The
examples given below are all for direct entry of the functions entered
in
degrees.
Functions marked
DBl
can
be
used in both double-precision and
single-precision modes. Functions marked
SNG
can be used only
in
single-precision mode, where double-precision arguments are first
converted to a single-precision value and then used
in
calculations.
Many functions can also
be
implemented by pressing the
co
~
responding
function key. Functions marked
(*)
have
no
corresponding key and must
be
entered through the keyboard.
88
\*ABS
Ixl
Fu
nction:
Absolute value
DBl
Remarks:
Returns the absolute value of the numeric argument. The
absolute value is the magnitude of the number irrespective
of its sign.
ABS-10
is
10.
Example:
ASS
-10
I
ENTER
I
10
lA
CS
cos-
'x
I
Function:
Inverse or arc cosine
DBl
Remarks:
Returns the arc cosine of the numeric argument. The arc
consine
is
the angle whose cosine
is
equal to the
argument. The value returned depends on the mode (DEG,
RAD
or GRAD).
Example:
DEGREE
I
ENTER
I
ACS
-0.5
I
ENTER
I
120
I*AHC
cosh-'x
I
Function:
Inverse hyperbolic cosine
DBl
Remarks:
Returns the inverse hyperbolic cosine of the numeric
argument.
Example:
AHC 10
I
ENTER
I
2.993222846
I*AHS
slnh-'x
I
Function:
Inverse hyperbolic sine
DBl
Remarks:
Returns the inverse hyperbolic sine of the numeric
argument.
Example:
AHS 27.3
I
ENTER
I
4.000369154
89