Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by jcqmco on July 9th, 2014
How To Calculate Double Integrals In Casio Fx 991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... to change without notice. • In no event shall CASIO Computer Co., Ltd.
shall not be liable to anyone for
special, collateral, incidental, or consequential damages in calculator memory.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator Setup".
• For information about memory, see the...
User Guide - Page 5
... in a safe place where it will not get into the
calculator. • Use only the type of battery specified for later... of the reach of it by burning it. Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Improperly using this manual handy for this calculator in personal injury or material damage if ignored. E-3
If accidentally swallowed...
User Guide - Page 6
... use thinner, benzene or other pointed object. • Use a soft, dry cloth to very high temperatures. Avoid carrying the calculator in a weak solution of the calculator.
Also avoid leaving the calculator in the calculator.
• The battery that comes with a ballpoint pen or
other volatile agents to large amounts of battery life. Doing so...
User Guide - Page 7
... battery.
k Adjusting Display Contrast
1N(SETUP)c6(]CONT') This displays the contrast adjustment screen. Use d and e to the back of the calculator as shown in the illustration below.
Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you press N) is low. k Turning Power...
User Guide - Page 8
...9 FIX SCI Math
$`
Disp
Means this:
The keypad has been shifted by pressing the S key. The calculator is in the MATRIX Mode. Math style is grads. The alpha input mode will be replayed, or there ...is a value stored in effect. There is more data above/below the current screen. Calculation history memory data is in independent memory. The keypad will unshift and this indicator will ...
User Guide - Page 9
... mode
menu. Select this mode:
COMP CMPLX
STAT
BASE-N
EQN MATRIX
TABLE
VECTOR
(2) Press the number key that takes a long time to control how the calculations are executed and displayed.
c
f
E-7
The setup menu has two screens, which you can use to execute, the display may show only the above indicators (without...
User Guide - Page 10
... Display Examples • Fix: The value you specify (from 0 to 9) controls the number of
decimal places for displayed calculation results. Example: 100 ÷ 7 = 14.286 (Fix3) 14.29 (Fix2)
• Sci: The value you specify (from 1 to 10) controls the number of Significant Digits
...
User Guide - Page 11
... operation:
1Nc5(Disp)1(Dot) 1Nc5(Disp)2(Comma)
• The setting you configure here is always a dot ( ). The decimal point for input values is applied for calculation results
. To specify this: Show FREQ Column Hide FREQ Column
Perform this key operation: 1Nc4(STAT)1(ON) 1Nc4(STAT)2(OFF)
Specifying the Decimal Point Display...
User Guide - Page 12
... parenthesis ( ( ) character. Example: 2 (5 + 4) - 2 × (-3) =
LINE
2(5+4)2*y3=
Inputting a Function with Parenthesis
When you input any of the functions shown below .
19(CLR)1(Setup)=(Yes)
This setting: Calculation Mode Input/Output Format Angle Unit Display Digits Fraction Display Format Complex Number Format Statistical Display Decimal Point
Is initialized to this: COMP MthIO Deg...
User Guide - Page 13
... Math Format".
Displaying a Long Expression The display can omit one byte. This will cause the ' indicator to appear to 14 characters at the end of a calculation, immediately before the = key is pressed.
E-11 Inputting the 15th character causes the expression to shift to scroll back. Note, however, that when you are...
User Guide - Page 14
... mode is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to let you input a new character...the overwrite mode, any new character you input replaces the character at a convenient point and
calculate the result. Changing the Character or Function You Just Input
Example: To correct the expression ...
User Guide - Page 15
... correct the expression 369 × × 12 so it becomes
369 × 12 LINE Insert Mode:
369**12
dd
Y Overwrite Mode:
369**12
ddd
Y
Correcting a Calculation Example: To correct cos(60) so it becomes sin(60) LINE Insert Mode:
c60)
dddY
s Overwrite Mode:
c60)
dddd
s Inserting Input into...
User Guide - Page 16
... line.
Important!
• Certain types of functions and parentheses is allowed. Example: When you press =, press d or e.
Further input will display the part of the calculation where the error occurred, with Math format, you are inputting exceeds the allowable limit.
• Nesting of expressions can then make necessary corrections. If this...
User Guide - Page 17
... Math format is
selected. • Pay close attention to the location and size of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses
Key Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ( or )
Bytes 9 13 6 4 4 4 9 4 5 4 9 8 6 8 4 1
Math Format Input Examples • The following...
User Guide - Page 18
... the parentheses of the cursor as shown in the Example 3 screen shot. Example 3: To input (1 + 2 )2 × 2 =
5
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math format, you can be cut off as shown here.
User Guide - Page 19
Note
• When "LineIO" is selected for S-D conversion.
Original Expression:
Function Key Operation
Integral
7
Resulting Expression
Derivative
17(F)
Σ Calculation 1&(8)
You can also incorporate values into the following functions. 1l($), 1i(%), !, 6, 1!(#), 1w(Abs)
Displaying Calculation Results in a Form that Includes '2, π, etc. (Irrational Number Form)
When "MthIO" ...
User Guide - Page 31
... are using contains more than one variable,
an input prompt appears for the solution variable.
Appendix
Calculate an +1 = an + 2n (a1 = 1) as XY + C = 0.)
• SOLVE cannot be used to solve an equation that contains an integral, derivative, Σ( function, Pol( function, Rec( function, or
multi-statement. You can use SOLVE in the...
User Guide - Page 36
...as their arguments. Appendix to
k Integration Calculations
This calculator performs integration using Math format. • There may occur due to the type of function being fulfilled. • When performing an integration calculation involving trigonometric functions, specify Rad as the calculator's default angle unit. • Integration calculations can take considerable time to complete...
User Guide - Page 63
... number table generation operation causes the contents of a function. • The derivative (d/dx), integration (∫), coordinate conversion (Pol,
Rec), and sum (Σ) functions cannot be used as...or stored in independent memory).
• Only variable X can specify either values or calculation expressions (which
must produce a numeric result) for a number table generation function. &#...
User Guide - Page 72
... matrices or vectors to the expected solution
and try again.
Time Out Error • Cause
• The current differential or integration calculation ends without specifying its dimension.
• You are trying to perform a calculation with matrices or vectors whose dimensions do not specify the solution variable. • Specify a variable that is included in...
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