Scientific Calculations; Arithmetic Operations; Functions - LEXIBOOK SC300i Manual De Instrucciones

All manuals and user guides at all-guides.com
[FSE] are pressed, the display mode changes in the sequence:
FIX→SCI→ENG→Floating point system→FIX...
Determination of the Number of Decimal Places
When the FIX, SCI or ENG indicator is displayed, the number of decimal places can be
set to any value between 0 and 9. After setting the number of decimal places, the
display value will be rounded to the corresponding number of digits and displayed. To
specify the number of decimal places, first press 2ndF
is displayed or after clearing the values in the calculator with
appropriate number key to specify the number of decimal places.
Determination of the Angular Unit
In this calculator, the following three angular units can be specified.
Degree (°): The DEG indicator appears.
Radians (rad):The RAD indicator appears.
Grads (g): The GRAD indicator appears.
To specify the angular unit, press . Each time
DRG
unit changes in the sequence: DEG→RAD→GRAD→DEG...
Note: For the examples given in subsequent explanations, make sure that none of the
following symbols or guidance are displayed unless otherwise specified.
FIX, SCI, ENG: see page 12
Check and Correct Equation
You can edit the equation not only while you are entering but also after getting your
answer.
[While entering]
• Press
to move the cursor.
< >
• If you need to delete a number, move the cursor to the number you wish to delete
then press DEL .
The number under the cursor will be deleted.
• If you need to insert a number, move the cursor to the place immediately after where
you wish to insert the number then enter the number.
[After finding the answer]
• Press
[⊂⊃] to go back to the equation to check it right or not.
2ndF
• Edit the equation the same way as while entering.
Substitute Arithmetic Function
If you have a formula and all you have to do is to substitute the numbers, this function
might be handy. It remembers the entered equation as a formula. After finding the first
answer, press [?] and this function automatically moves the cursor back to the
2ndF
first number of the equation and lets you change the number. After that, you can skip to
the next number by pressing [?] and so on. At any place, pressing [=] lets you
2ndF
know the answer for the new equation.
For example: A² + B² = (1) A= 2.5, B= 3.5
(2) A= 2.5, B= 4.5
© Lexibook 2005
Key Operation
1 2.5 [ x² ] [ + ] 3.5 [ x² ] [ = ]
2 [2ndF] [ ? ]
3 [2ndF][ ? ]
4 [DEL] 4 [ = ]
[TAB] when a calculation result
. Then press the
ON/C
If the FIX, SCI, or ENG indicator is displayed, clear the indicator by pressing
[FSE]. (See page 12)
Arithmetic Operations (→ → → → page 8)
Functions (→ → → → page 8)
Before performing function calculations be sure to press
• Before starting calculations, specify the angular unit (See page 18)
is pressed, the angular
DRG
• Chain calculations(The result of the last calculation is used as the first operand.)
Random Number
A pseudo-random number with three significant digits can be generated by pressing
[Random]
2ndF
perform this function in the normal and statistics mode.
• Random number use memory Y. Each random number is generated on the basis of
the value stored in memory Y (pseudo-random number series)
Angular Unit Conversions (→ → → → page 9)
The angular unit can be changed in the following sequence:
degrees→radians→grades→degrees...
Memory Calculations (→ → → → page 8)
This calculator has one independent memory (M), one last answer memory, and two
temporary memories, (X,Y).
Independent memory (M)
(M) memory is available in the normal mode.
[M] :
STO
Clear the independent memory and then stores the displayed value in it.
RCL [M] or
Recalls the value in the independent memory.
:
M+
Adds the displayed value to the value stored in the independent memory.
[M-] :
2ndF
Subtracts the displayed value from the value stored in the independent memory.
• Press
0
memory.
Display Remark
2.5² + 3.5²=
18.5 (1)
2.5² + 3.5²
2.5² + 3.5²
2.5² + 4.5²=
26.5 (2)

SCIENTIFIC CALCULATIONS

ON/C .
.To generate the next random number, press [=]. You can
=
2ndF [ALPHA] [M] = :
STO [M] to clear (i.e. store 0) the value stored in the independent
2ndF
4