Casio FX-991ES Support Question
Casio FX-991ES Support Question
Find answers below for this question about Casio FX-991ES.Need a Casio FX-991ES manual? We have 2 online manuals for this item!
Question posted by mitchhkgyvr on September 18th, 2023
How Do I Store Values From Another Mode?
I cannot store values in my calculator from specifically mode 5 equation 3, do i store the answers the same way I do in other modes or is there a different ways to store the values?
Current Answers
Answer #1: Posted by SonuKumar on September 18th, 2023 8:24 PM
SonuKumar
Member since:
May 9th, 2021 Points: 16,615,400
Member since:
May 9th, 2021 Points: 16,615,400
To store a value from equation 3 in mode 5 on your Casio FX-991ES calculator, you can follow these steps:
Press the MODE button to enter mode 5.
Press the EQU button to enter equation mode.
Enter equation 3 into the calculator.
Press the SOLVE button to solve the equation.
The answer to the equation will be displayed on the screen.
To store the answer, press the STO button followed by the variable you want to store it in (A, B, C, D, E, F, X, or Y).
For example, to store the answer to equation 3 in variable A, you would press the following buttons:
MODE EQU 3 SOLVE A STO
Once you have stored the value in a variable, you can recall it by pressing the ALPHA button followed by the variable name. For example, to recall the value stored in variable A, you would press the following buttons:
ALPHA A
You can also use the stored values in calculations by simply typing their variable names into the equation. For example, if you have stored the value 5 in variable A and the value 10 in variable B, you can calculate the sum of the two values by typing the following equation into the calculator:
A + B
The calculator will then display the answer, which is 15.
Note: You cannot store values in equation 3 in mode 5 using the same method as you would in other modes. In other modes, you can store a value by simply pressing the STO button followed by the variable you want to store it in. However, this method does not work in equation 3 in mode 5.
I hope this helps.
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
Your search handyman for all e-support needs!!
Answer #2: Posted by Technoprince123 on September 18th, 2023 7:08 PM
Technoprince123
Member since:
February 8th, 2021 Points: 1,205,190
Member since:
February 8th, 2021 Points: 1,205,190
- The Casio calculator can store values in two ways: memory and variables.
- To store a value in memory, press the M+ button and then enter the value.
- To store a value in a variable, press the VAR button and then enter the name of the variable.
Please response if this answer is acceptable and solw your problem thanks
Related Casio FX-991ES Manual Pages
User Guide - Page 8
... 1 key. The calculator is in the VECTOR Mode. Calculation history memory data is available and can be exited and this :
The keypad has been shifted by for input of significant digits is in the MATRIX Mode. The alpha input mode has been entered by for input of decimal places is a value stored in the STAT Mode. This indicator...
User Guide - Page 9
... the number key that corresponds to the mode you can jump between using c and f.
c
f
E-7 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 takes a long time to control...
User Guide - Page 11
... operation:
1Nc5(Disp)1(Dot) 1Nc5(Disp)2(Comma)
• The setting you configure here is applied for input values is always a dot ( ). E-9 Outside the specified range, results are displayed using exponential format.
only. ... be displayed in nonexponential format. The decimal point for calculation results
. • Norm: Selecting one of the STAT Mode STAT editor screen on or off.
User Guide - Page 12
... 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 Norm1 d/c a+bi OFF Dot
• To cancel initialization without doing anything, press A(Cancel) instead of =.
Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator...
User Guide - Page 14
... from Linear to the overwrite mode. See "Incorporating a Value into a Function" for Linear format input is
selected. The cursor is a horizontal flashing line ( ) when the overwrite mode is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to the overwrite mode when you are
10...
User Guide - Page 20
... and the imaginary part. CMPLX Mode polar coordinate display (r ∠ θ )
The following are the calculations for which ' form is also counted as a term). ' form calculation results use display formats like those...The following are the input value ranges for which ' form (form that include square root symbols can be displayed in the CMPLX Mode, the following conditions apply ...
User Guide - Page 27
... Overview
• Answer Memory contents are stored in independent memory. In this case, however, the imaginary part will be added to Perform a Series of Calculations
Example: To divide the result of individual values.
E-25
Answer Memory can be cleared from independent memory. Independent Memory
Calculation results can hold up to another calculation mode. The "M" display...
User Guide - Page 28
... Memory (M)
You can
perform using independent memory.
The following is the key operation for inserting the M variable. E-26 To do this:
Add the displayed value or result of the expression to independent memory
Subtract the displayed value or result of the different operations you press the A key, change the calculation mode, or turn off the...
User Guide - Page 29
... specific value or a calculation ...result to disappear from the display. To clear the contents of an expression. E-27 Example: To assign the result of 3 + 5 to variable A. 3+51t(STO)y(A)
• Use the following procedure to clear the contents of Answer Memory, independent memory, and all of =. Appendix
Clearing the Contents of a Specific...calculation mode, or turn off the calculator...
User Guide - Page 30
... used with a single variable on the left Example: {variable} = {expression}
The expression on the right of expressions that contains variables, and then assign values to the variables and perform the calculation. You can use CALC in the COMP Mode (N1) and in the CMPLX Mode (N2).
Example: LINE
3*Sy(A)
s
Prompts for input of A
5=
E-28
User Guide - Page 31
.... E-29
s (or=)
10=
• To exit CALC, press A. • If the expression you specify otherwise, an equation is solved for X.
You can use SOLVE in the COMP Mode (N1) only. Example: Y = X + 5, X = sin(M), X + 3 = B + C,
XY + C (Treated as the value of an changes from a2 to a5. (Results: a2 = 3, a3 = 7, a4 = 13, a5 = 21)
*1 Assigns 1 to...
User Guide - Page 34
... functions. All of functions. Before performing an operation, be used in the CMPLX Mode, as long as complex numbers are available in the same modes as the calculator's default angle unit. The following shows the required key operations and the values this calculator uses for pi (π) and e.
π = 3.14159265358980 (15(π)) e = 2.71828182845904 (S5(e)) •...
User Guide - Page 35
...(" is used in the same modes as the trigonometric functions.
• For the logarithmic function "log(", you input only a single value, a base of 10 is a natural logarithm function with base e. • You can specify base m using Math format. The calculator will automatically convert it to display the angle unit specification menu shown below. E-33
User Guide - Page 36
... number arguments are supported.
• The X^, '(, 3'(, ^'( functions can be large error in the CMPLX Mode, as long as complex numbers are treated as the calculator's default angle unit. • Integration calculations can omit specification of the tolerance range. Specify a tol value that conforms with a < x < b. Appendix to
*1 A base of 10 (common logarithm) is used as their...
User Guide - Page 38
... based on centered difference approximation. d/dx( f(x), a, tol )
f(x): Function of the inflection point in x values - Appendix Determine f '( π ) when f(x) = sin(x)
2 (tol specification omitted.)
d (3x2 - 5x + 2, 2, 1×10-12) = 7 dx
E-36 discontinuous points in x values -
k Differential Calculations
Your calculator performs differential calculations by the following...
User Guide - Page 39
... X value
Y: Specifies the rectangular coordinate Y value
• Calculation result θ is displayed in the range of polar coordinate
• Input value θ is assigned
to variable X, while y is treated as constants.)
a: Calculation range start point b: Calculation range end point
• a and b are treated as an angle value, in the COMP, STAT, MATRIX, and VECTOR calculation modes...
User Guide - Page 40
...calculations. n and r must be different.
Factorial (!) This function obtains the factorials of a stand-alone operation, the calculation is performed using only the first value (either the r-value or the X-value... values are performing a real number calculation, this function simply obtains the absolute value. Values actually generated by your calculator will be integers in the CMPLX Mode....
User Guide - Page 59
...Mode (N6). The actual number of solutions depends on the equation.
• Pressing A while a solution is displayed will return to the coefficient editor screen.
• The display format of solutions is in a special Matrix Answer Memory named "MatAns". Appendix Equation Calculation: to engineering notation while an equation solution is displayed.
All calculations in this section are stored...
User Guide - Page 64
...viewing values
only. k TABLE Mode Precautions
Note that you want to specify the dimension displays the vector editor screen. E-62 Vector Calculations (...VECTOR)
You can save vectors under the names "VctA", "VctB", and "VctC" in the TABLE Mode clears the number table generation function. k Creating and Managing a Vector Creating a Vector and Saving It in a special Vector Answer...
User Guide - Page 66
...× B
Scientific Constants
Your calculator comes with 40 built-in any calculation mode except for BASE-N. • To ...values of the size 1 vectors perpendicular to both A and B.
*1 cos θ = (A•B) , which becomes θ = cos-1 (A•B)
AB
AB
*2 Size 1 vector perpendicular to recall. Appendix
Store...
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