Casio CFX-9970G, Руководство пользователя

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36
2-1 Basic Calculations
k k
k k k
Arithmetic Calculations
• Enter arithmetic calculations as they are written, from left to right.
• Use the - key to input the minus sign before a negative value.
• Calculations are performed internally with a 15-digit mantissa. The result is
rounded to a 10-digit mantissa before it is displayed.
• For mixed arithmetic calculations, multiplication and division are given priority
over addition and subtraction.
Example Operation Display
23 + 4.5 – 53 = –25.5 23 + 4.5 - 53 w –25.5
56
!
(–12)
÷
(–2.5) = 268.8 56 * - 12 / - 2.5 w 268.8
(2 + 3)
!
10
2
= 500 ( 2 + 3 )* 1 E 2 w *
1
500
1 + 2 – 3
!
4
÷
5 + 6 = 6.6 1 + 2 - 3 * 4 / 5 + 6 w 6.6
100 – (2 + 3)
!
4 = 80 100 -( 2 + 3 )* 4 w 80
2 + 3
!
(4 + 5) = 29 2
+
3
*(
4
+
5 w *
2
29
(7 – 2)
!
(8 + 5) = 65
(
7
-
2
)(
8
+
5
) w
*
3
65
6
= 0.3 6
/(
4
*
5
) w
*
4
0.3
4
!
5
* 1 “ ( 2 + 3 ) E 2” does not produce the correct result. Be sure to enter this calculation as
shown.
*
2
Final closed parentheses (immediately before operation of the w key) may be omitted, no
matter how many are required.
*
3
A multiplication sign immediately before an open parenthesis may be omitted.
*
4
This is identical to 6 / 4 / 5 w .
k k
k k
k Number of Decimal Places, Number of Significant Digits,
Exponential Notation Range
• These settings can be made while setting up the display format (Display) with
the set up screen.
• Even after you specify the number of decimal places or the number of signifi-
cant digits, internal calculations are still performed using a 15-digit mantissa,
and displayed values are stored with a 10-digit mantissa. Use Rnd (
4 ) of the
Numeric Calculation Menu (NUM) to round the displayed value off to the
number of decimal place and number of significant digit settings.
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