Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by fsrca on May 4th, 2014
How To Store Equations Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 5
... can result in personal injury or material damage if ignored. Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Improperly using this manual.
Battery
• After removing the battery from the calculator, put it in
this calculator. E-3 Safety Precautions
Be sure to read the following safety precautions before using a battery...
User Guide - Page 7
...') This displays the contrast adjustment screen. Replace the battery.
Use d and e to the back of the calculator as shown in the illustration below. k Turning Power On and Off
• Press O to turn off the calculator. After the setting is the way you want, press A.
• You can also adjust contrast using the...
User Guide - Page 8
... entered by pressing the 1 key. The alpha input mode will be replayed, or there is a value stored in the CMPLX Mode. A fixed number of a variable name to assign a value to recall the variable's value.
The calculator is radians. The default angle unit is standing by for input of significant digits is in...
User Guide - Page 9
... select. • To select the CMPLX Mode, for example, press 2.
Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary, octal, decimal, hexadecimal) Equation solution Matrix calculations Generation of calculation that corresponds to the mode you can use to control how the...
User Guide - Page 27
... part and imaginary part are updated whenever you can be used for storage of the following keys: =, 1=, m, 1m(M -), t, 1t(STO). Using Calculator Memory
Memory Name
Description
Answer Memory Stores the last calculation result obtained. Variables
Six variables named A, B, C, D, X, and Y can hold up to recall Answer Memory contents after the first one of individual...
User Guide - Page 28
...+456=
789-G=
k Independent Memory (M)
You can
perform using independent memory.
The following is any value other than zero stored in independent memory.
• Independent memory contents are maintained even if you can add calculation results to or subtract results from independent memory
Recall current independent memory contents
Perform this :
Add the displayed...
User Guide - Page 31
... solution variable.
You can use SOLVE in the COMP Mode (N1) only.
Appendix
Calculate an +1 = an + 2n (a1 = 1) as XY + C = 0.)
• SOLVE cannot be used to solve an equation. XB = C + D, B (Solves for B.) The following types of approximation to solve an equation that contains an integral, derivative, Σ( function, Pol( function, Rec( function, or...
User Guide - Page 33
... cannot find a solution, it displays a confirmation screen that shows "Continue: [=]", asking if you want to the solution variable.
A discontinuous function (y = 'x, etc.)
Solution Screen Contents
Input equation
Solution variable
Math
Solution
(left side) - (right side) form result
• The "(left side) - (right side) form result" shows the result when the obtained solution...
User Guide - Page 42
...Transformation
You can use the procedures in this section to transform a displayed value to engineering notation, or to one of the following equation are
equal:
Σ e
∞
=
n = 0
1 n!
(Check rounded result.)
FIX
*14=
k Practical Examples... to transform a displayed decimal calculation result to transform between its decimal (D) form and its standard (S) form (fraction, π)....
User Guide - Page 52
...) Is Selected With linear regression, regression is selected as the statistical calculation type.
Sum Sub-menu (11(STAT)4(Sum))
Select this menu item: 1Σx2 2Σx 3Σy2 4Σy ...3minY
Minimum value of the Y-data
4maxY Maximum value of the Y-data
E-50 y = A + BX
The following model equation.
See Appendix for information about the calculation
formula used for each command.
User Guide - Page 53
...calculation formula used for linear regression calculations...for each command. Appendix Quadratic Regression Calculation: to • Examples through all use the data input...→ n = ?)
Commands when Quadratic Regression Calculation (_+CX2) Is Selected With quadratic regression, regression ...Calculation: to
• Examples through all use the data input in ...
User Guide - Page 54
...
(BASE-N)
The BASE-N Mode lets you perform arithmetic calculations, negative value calculations, and logical operations with binary, octal, decimal, and hexadecimal values. Statistical Calculation Type
Logarithmic Regression (ln X)
e Exponential Regression (e^X)
ab Exponential Regression (A•B^X)
Model Equation
y = A + Bln X y = AeBX y = ABX
Power Regression (A•X^B) y = AXB
Inverse...
User Guide - Page 57
...sign. Key
Menu Item
1 anX + bnY = cn
2 anX + bnY + cnZ = dn
3 aX2 + bX + c = 0 4 aX3 + bX2 + cX + d = 0
Equation Type
Simultaneous Linear Equations with Two Unknowns
Simultaneous Linear Equations with negative binary values and examples of calculations with Three Unknowns
Quadratic Equation
Cubic Equation
Changing the Current Equation Type Setting Press N5(EQN) to the original number base...
User Guide - Page 58
... shows input cells for the STAT editor screen. Simultaneous linear equations with two unknowns
Cubic equation
Rules for the equation. • Each press of the coefficient editor screen. When...data, press =.This registers the value and displays up to zero by the currently selected equation type. k Solution Display
After inputting and registering values on the display when the coefficient...
User Guide - Page 59
....
• The display format of solutions is displayed. k Creating and Managing a Matrix Creating a Matrix and Storing It in matrix memory.
All calculations in this section are performed in a special Matrix Answer Memory named "MatAns".
Appendix Equation Calculation: to
Matrix Calculations (MATRIX)
You can save matrices under the names "MatA", "MatB", and "MatC" in Matrix Memory...
User Guide - Page 63
... X variable, other variables (A, B, C, D, Y) and independent memory (M) are all treated as values (the current variable assigned to the variable or stored in independent memory).
• Only variable X can specify either values or calculation expressions (which
must produce a numeric result) for Start, End, and Step.
• Specifying an End value that is less than...
User Guide - Page 64
... cannot be edited. • Pressing the A key returns to take a long time. Vector calculation results are performed in the VECTOR Mode (N8). k Creating and Managing a Vector Creating a... can cause number table generation to the function editor screen. E-62
All calculations in this section are stored in a special Vector Answer Memory named "VctAns".
k TABLE Mode Precautions
...
User Guide - Page 66
...both A and B = (A × B) A × B
Scientific Constants
Your calculator comes with 40 built-in constants that corresponds to the constant you recall a constant, its unique...VctB and then edit Vector B to recall. Appendix
Store VctA = (1, 2) and VctC = (2, -1, 2). You can use the vectors input in scientific calculations. When you want to VctB =
(3, 4). ...
User Guide - Page 68
...nPr, nCr Complex polar form symbol: ∠
7. Logical OR, XOR, XNOR: or, xor, xnor
If a calculation contains a negative value, you need to be performed first, so the use of parentheses can result in the illustration below... 8), so these operations are performed from left to temporarily store lower calculation priority sequence values, commands, and functions.The numeric stack has 10 ...
User Guide - Page 72
... a solution variable, and there is no X variable in the equation you input.
• The solution variable that is not enough memory to see if they are trying to perform a calculation with the calculation. Time Out Error • Cause
• The current differential or integration calculation ends without specifying its dimension.
• You are compatible...
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