Casio V.P.A.M fx-991 Руководство - Страница 9
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2/BEFORE BEGINNING CALCULATIONS
Formula Input (V.P.A.M. System)
The V.P.A.M. System of this calculator lets you sim-
ply input a formula just as it is written, and then press
the E] key to obtain the result. The execution of
arithmetic operations, functions and expressions wi-
thin parentheses are automatically performed in the
correct priority sequence.
*Be sure to press the
key before Starting any new
calculation.
Example 1: 2 x (3 + 4) =
we
(-j3G3
Example 2: sin30 = 0.5
iv
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@ Calculation Priority Sequence
The calculation priority sequence is used in mathemat-
ics to decide which operation should be performed first.
This calculator automatically assigns the calculation
priority sequence shown below.
') Type 'A Functions (where the value is entefed first
and then the function key is pressed)
x', x', x!, NEG (in the BASE-N Mode)
2) Powers, roots
;
a
Coordinate conversions
_
R-P, P>R
|
Permutations, conbinations
.
aPr, nCr
(3) Type B Functions (where the function key is pressed
and then the value is entered).
Vv, V , log, In, &, 10", sin, cos, tan, sin™' , cos"
tan=', sinh, cosh,-:tanh, sinh7', cosh" , tanh",
NOT {in the BASE-N Mode) -
?
(4) Multiplication, division inenading constant calcula-
tions)
—.. x, =
) Addition, subtraction (including constant Calcula-
tions) -
es Sie
© AND:
sen ee |
@) OR, XOR, XNOR- z
*When functions with the same priority sequence are
used in series, they are executed from right to left
[e"Inv120—e { in{v:120)}]. Other expressions of the
fake priority sequence are performed from left to
} In the BASEN Mode
Fy
ee
tions are executed right to left.'
"cen npsund funétion
Som
ng contained. , within, 'parentheses' receiyes
highest priority.
ms
Example:
. ae
2+ BRUlogesin(2as44'eeye pow
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