Frequently Asked Questions - Casio fx-570AR X User Manual

RanInt#(a, b)
• Precision is basically the same as that described under "Calculation
Range and Precision", above.
, ��
�� 3
• x , x!, nPr, nCr type functions require consecutive internal
y
,
calculation, which can cause accumulation of errors that occur with each
calculation.
• Error is cumulative and tends to be large in the vicinity of a function's
singular point and inflection point.
• The range for calculation results that can be displayed in π form when
MathI/MathO is selected for Input/Output on the setup menu is |x| < 10
Note, however, that internal calculation error can make it impossible to
display some calculation results in π form. It also can cause calculation
results that should be in decimal form to appear in π form.
Specifications
Power Requirements:
fx-570AR X: AAA-size battery R03 (UM-4) × 1
fx-991AR X: Built-in solar cell; button battery LR44 × 1
Approximate Battery Life:
2 years (based on one hour of operation per day)
Power Consumption: 0.0006 W (fx-570AR X)
Operating Temperature: 0°C to 40°C
Dimensions:
fx-570AR X: 13.8 (H) × 77 (W) × 165.5 (D) mm
fx-991AR X: 11.1 (H) × 77 (W) × 165.5 (D) mm
Approximate Weight:
fx-570AR X: 100 g including the battery
fx-991AR X: 90 g including the battery
■■ Frequently Asked Questions ■■
How can I change a fraction form result produced by a division
operation to decimal form?
→ While a fraction calculation result is displayed, press . To have
calculation results initially appear as decimal values, change the setup
menu Input/Output setting to MathI/DecimalO.
What is the difference between Ans memory, independent memory, and
variable memory?
→ Each of these types of memory acts like "containers" for temporary
storage of a single value.
Ans Memory: Stores the result of the last calculation performed. Use
this memory to carry the result of one calculation on to the next.
Independent Memory: Use this memory to totalize the results of
multiple calculations.
Variables: This memory is helpful when you need to uses the same
value multiple times in one or more calculations.
What is the key operation to take me from the Statistics Mode or Table
Mode to a mode where I can perform arithmetic calculations?
→ Press (Calculate).
How can I return the calculator to its initial default settings?
→ Perform the following operation to initialize calculator settings (except
the Contrast setting): (RESET)(Setup Data)(Yes).
a < b; |a|, |b| < 1 × 10 ; b − a < 1 × 10
10
40
10
6
.