Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by hiboblaw1 on March 28th, 2014
Fx-991es Plus How To Save In Memory
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... all data currently in the Appendix. Note that come with it . be liable for the angle unit.
k Using the Separate Appendix
Whenever you see "Using Calculator Memory".
In this manual, it . Example: 1(Setup)
Indicates the menu item that is selected by any claim of how a key operation to select an on-screen...
User Guide - Page 5
... of battery specified for later reference. Never expose the battery to direct heat or dispose of it by burning it will not get into the
calculator. • Use only the type of fire and personal injury.
E-3 Safety Precautions
Be sure to read the following safety precautions before using a battery can cause...
User Guide - Page 6
... of this unit discharges slightly during shipment and storage. Avoid carrying the calculator in a weak solution of water and a mild neutral household detergent. Such conditions can cause memory contents to clean the calculator. Very low temperatures can damage the case. If the calculator becomes very dirty, wipe it might be splashed by water or...
User Guide - Page 7
... menu (which appears when you want, press A.
• You can also adjust contrast using the calculator, slide its hard case downwards to remove it, and then affix the hard case to turn on ... means that battery power is the way you press N) is on the calculator. • Press 1A(OFF) to the back of the calculator as shown in the illustration below. Replace the battery.
E-5 k Turning ...
User Guide - Page 8
.... The default angle unit is in effect. A fixed number of decimal places is degrees.
The calculator is a value stored in the STAT Mode. Calculation history memory data is more data above/below the current screen. Example:
Input expression
{ Calculation result
k Display Indicators
Sample Display:
CMPLX
This indicator:
S
A
M
STO
RCL
STAT CMPLX
MAT VCT
7 8 9 FIX...
User Guide - Page 17
... Input
• The "Bytes" column shows the number of bytes of memory that are all performed while 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) ...
User Guide - Page 26
... is on the display, you can press A and then d or e to back-step through calculation history memory contents.
Appendix
E-24 Using Calculation History Memory and Replay
Calculation history memory maintains a record of each calculation expression you turn off the calculator, press the O key, change to the calculation mode or the input/output format, or perform any reset operation.
•...
User Guide - Page 27
....
• With the above procedure, you need to 15 digits.
• Answer Memory contents are not change if an error occurs during the current calculation.
• Answer Memory contents are stored in independent memory. Independent Memory
Calculation results can hold up to recall Answer Memory contents after the first one of the following keys: =, 1=, m, 1m(M -), t, 1t(STO...
User Guide - Page 28
... following is the key operation for inserting the M variable.
E-26 To do this key operation: m
1m(M-) tm(M)
• You can
perform using independent memory.
Inputting Answer Memory Contents into a calculation, which tells the calculator to use the current independent memory contents at that location. The following is any value other than zero stored in independent...
User Guide - Page 29
... variable A by the contents of variable B Sy(A)*Se(B)=
• Variable contents are maintained even if you can assign a specific value or a calculation result to check the contents of =.
Press 19(CLR)2(Memory)=(Yes). • To cancel the clear operation without doing anything, press
A(Cancel) instead of a variable. Example: 23 + 9 = 32 53 - 6 = 47...
User Guide - Page 59
...Calculations (MATRIX)
You can save matrices under the names "MatA", "MatB", and "MatC" in accordance with the input/ output format and complex number display format settings of the calculator... When there are performed in a special Matrix Answer Memory named "MatAns". k Creating and Managing a Matrix Creating a Matrix and Storing It in Matrix Memory
(1) In the MATRIX Mode, press 14(MATRIX)1(Dim...
User Guide - Page 60
...the matrix editor screen to display the matrix you want to
copy, or display the Matrix Answer Memory screen. • If you want to create another matrix, repeat this key: y(MatA) ... B Matrix C
Press this procedure from step (1).
Copying the Contents of matrix calculations.
k Performing Matrix Calculations
Pressing A while the matrix selection screen or matrix editor screen is subject to...
User Guide - Page 61
For more information, see "Using Answer Memory to Perform a Series of Matrix C (Trn(MatC)). MatA + MatB (Adding Two Matrices...-1 2 .
• The following examples use the screen contents in Examples and (MatA, MatB, MatC). Obtain the transposition of Calculations". Obtain the inverse matrix of Matrix A (det(MatA)). Note that appears when you press 14(MATRIX).
MatA × MatB (...
User Guide - Page 63
... to the variable or stored in independent memory).
• Only variable X can be used for value input.
• You can specify either values or calculation expressions (which
must produce a numeric result... X to be used for the X variable, other variables (A, B, C, D, Y) and independent memory (M) are all treated as values (the current variable assigned to the function editor screen. k Start...
User Guide - Page 64
... function f(x). • Note that changing the input/output format settings (Math format or Linear format) on the calculator's setup screen while in vector memory. k Creating and Managing a Vector Creating a Vector and Saving It in a special Vector Answer Memory named "VctAns".
E-62
Table contents cannot be edited. • Pressing the A key returns to take a long...
User Guide - Page 65
... editor screen in the EQN Mode. For more information. k Performing Vector Calculations
To perform a vector calculation, display the vector calculation screen by pressing the A key.
See "Copying the Contents of a ... another vector in vector memory to the vector calculation screen, press A.
Vector Answer Memory Screen The Vector Answer Memory screen shows the result of the last vector...
User Guide - Page 68
...omitted are the same priority (Priority 8), so these operations are performed from left to right when both types are mixed in the same calculation. Prefix symbol: (-) (negative sign) d, h, b, o (base n symbol)
5. Dot product: • (Dot) 8. Example...)=
1 ÷ 2i = 1 i
2 1 ÷ (2i) = -
1
i
2
k Stack Limitations
This calculator uses memory areas called stacks to input: (-2)2.
User Guide - Page 71
... two or more information, see "Displaying the Location of the error. Note that the memory or variable value is a problem with the format of the calculation you are performing has caused the capacity of a function, make sure that in calculation history memory.
Math ERROR
• Cause • The intermediate or final result of the...
User Guide - Page 72
• Action • Make necessary corrections.
Note that is not enough memory to perform your calculation. • Action
• Narrow the table calculation range by changing the Start, End, and Step values, and try again.
Can't Solve Error (SOLVE feature only) • Cause
• The calculator could not obtain a solution. • Action
• Check for...
User Guide - Page 73
... (LR44).
Note that you should make separate copies of these steps. (1) Check the calculation expression to make sure that it automatically initializes the calculation mode and clears memory contents. Important!
• Removing the button battery from the calculator causes independent memory contents and values assigned to variables to perform. (3) If the above steps do not...
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