Normal Probability Calculations; Simultaneous Linear Equations; Quadratic And Cubic Equation Solvers; Error And Calculation Ranges - Sharp EL-509WM Operation Manual

Normal Probability Calculations

• P(t), Q(t), and R(t) will always take positive values, even when t<0,
because these functions follow the same principle used when solving for
an area.
Values for P(t), Q(t), and R(t) are given to six decimal places.

SIMULTANEOUS LINEAR EQUATIONS

Simultaneous linear equation with two unknowns (2-VLE) or with three
unknowns (3-VLE) may be solved using this function.
Q 2-VLE: m20
W 3-VLE: m21
• If the determinant D = 0, an error occurs.
• If the absolute value of an intermediate result or calculation result is 1 ×
10 100 or more, an error occurs.
• Coefficients ( a , etc.) can be entered using ordinary arithmetic operations.
1
• To clear the entered coefficients, press @c.
• Pressing ® when the determinant D is in the display recalls the
coefficients. Each time ® is pressed, a coefficient is displayed in the
order of input, allowing the entered coefficients to be verified (by pressing
@®, coefficients are displayed in reverse order.) To correct a
particular coefficient being displayed, enter the correct value and then
press ®.

QUADRATIC AND CUBIC EQUATION SOLVERS

Quadratic (ax 2 + bx + c = 0) or cubic (ax
may be solved using this function.
Q Quadratic equation solver: m22
W Cubic equation solver:
• Press ® after entering each coefficient.
• The result will be displayed by pressing ® after entering all
coefficients. When there are more than 2 results, the next solution will be
displayed.
• When the result is an imaginary number, "xy" symbol will appear. The
display can be switched between imaginary and real parts by pressing
@≠.
• The results obtained by this function may include a margin of error.

ERROR AND CALCULATION RANGES

Errors
An error will occur if an operation exceeds the calculation ranges, or if a
mathematically illegal operation is attempted. When an error occurs, pressing
< (or >) automatically moves the cursor back to the place in the
equation where the error occurred. Edit the equation or press ª to
clear the equation.
Error Codes and Error Types
Syntax error (Error 1):
• An attempt was made to perform an invalid operation.
Ex. 2 @{
Calculation error (Error 2):
• The absolute value of an intermediate or final calculation result equals or
exceeds 10 100 .
• An attempt was made to divide by 0 (or an intermediate calculation resulted in
zero).
• The calculation ranges were exceeded while performing calculations.
Depth error (Error 3):
• The available number of buffers was exceeded. (There are 10 buffers* for
numeric values and 24 buffers for calculation instructions).
*5 buffers in STAT mode.
• Data items exceeded 100 in the statistics mode.
Equation too long (Error 4):
• The equation exceeded its maximum input buffer (142 characters).
An equation must be shorter than 142 characters.
Calculation Ranges
• Within the ranges specified, this calculator is accurate to ±1 of the
least significant digit of the mantissa. However, a calculation error
increases in continuous calculations due to accumulation of each
calculation error. (This is the same for y
continuous calculations are performed internally.)
Additionally, a calculation error will accumulate and become larger in
the vicinity of inflection points and singular points of functions.
• Calculation ranges
±10 –99 ~ ±9.999999999×10
If the absolute value of an entry or a final or intermediate result of a
calculation is less than 10 –99 , the value is considered to be 0 in calculations
and in the display.

BATTERY REPLACEMENT

Notes on Battery Replacement
Improper handling of batteries can cause electrolyte leakage or explosion.
Be sure to observe the following handling rules:
• Replace both batteries at the same time.
• Do not mix new and old batteries.
• Make sure the new batteries are the correct type.
• When installing, orient each battery properly as indicated in the calculator.
• Batteries are factory-installed before shipment, and may be exhausted
before they reach the service life stated in the specifications.
Notes on erasure of memory contents
When the battery is replaced, the memory contents are erased. Erasure
can also occur if the calculator is defective or when it is repaired. Make a
note of all important memory contents in case accidental erasure occurs.
3 + bx 2 + cx + d = 0) equation
m23
x x x
, ¿ , e , ln , etc., where
99 and 0.
When to Replace the Batteries
If the display has poor contrast, the batteries require replacement.
Cautions
• Fluid from a leaking battery accidentally entering an eye could result in
serious injury. Should this occur, wash with clean water and immediately
consult a doctor.
• Should fluid from a leaking battery come in contact with your skin or
clothes, immediately wash with clean water.
• If the product is not to be used for some time, to avoid damage to the
unit from leaking batteries, remove them and store in a safe place.
• Do not leave exhausted batteries inside the product.
• Do not fit partially used batteries, and be sure not to mix batteries of
different types.
• Keep batteries out of the reach of children.
• Exhausted batteries left in the calculator may leak and damage the
calculator.
• Explosion risk may be caused by incorrect handling.
• Do not throw batteries into a fire as they may explode.
Replacement Procedure
1. Turn the power off by pressing @ F.
2. Remove two screws. (Fig. 1)
3. Slide the battery cover slightly and lift it to remove.
4. Remove the used batteries by prying them out with a ball-point pen or
other similar pointed device. (Fig. 2)
5. Install two new batteries. Make sure the "+" side is facing up.
6. Replace the cover and screws.
7. Press the RESET switch (on the back).
• Make sure that the display appears as shown below. If the display does
not appear as shown, remove the batteries reinstall them and check the
display once again.
(Fig. 1)
Automatic Power Off Function
This calculator will turn itself off to save battery power if no key is
pressed for approximately 10 minutes.

SPECIFICATIONS

Calculations: Scientific calculations, statistical calculations, etc.
Internal calculations: Mantissas of up to 14 digits
Pending operations: 24 calculations 10 numeric values
(5 numeric values in STAT mode)
3V ¶ (DC):
Power source:
Alkaline batteries (LR44 or equivalent) × 2
Power consumption: 0.0002 W
Operating time: Approx. 5000 hours
when continuously displaying 55555. at 25°C
(77°F).
Varies according to use and other factors.
Operating temperature: 0°C – 40°C (32°F – 104°F)
79.6 mm (W) × 154.5 mm (D) × 13.2 mm (H)
External dimensions:
3-1/8" (W) × 6-3/32" (D) × 17/32" (H)
Weight: Approx. 95 g (0.21 lb) (Including batteries)
Batteries × 2 (installed), operation manual, quick
Accessories:
reference card and hard case
FOR MORE INFORMATION ABOUT
SCIENTIFIC CALCULATOR
Visit our Web site.
http://sharp-world.com/calculator/
SHARP CORPORATION
(Fig. 2)