Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by sozchheymom on March 19th, 2014
How To Calculate Mean In Linear Equation In Casio 991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... by the number key operation (1) before it means you should refer to the corresponding example number in...Calculation Modes and Calculator Setup".
• For information about memory, see the symbol Appendix in the illustration nearby. Note that come with or arising out of the purchase or use of this manual are subject to change without notice. • In no event shall CASIO...
User Guide - Page 7
... is the way you want, press A.
• You can also adjust contrast using the calculator, slide its hard case downwards to remove it probably means that battery power is on the calculator. • Press 1A(OFF) to turn off the calculator.
Important!
• If adjusting display contrast does not improve display readability, it , and...
User Guide - Page 8
...SCI Math
$`
Disp
Means this indicator will be replayed, or there is more data above/below the current screen. The alpha input mode will disappear when you press a key. The calculator is a value stored .... A fixed number of a variable name to the variable. The calculator is in independent memory. The calculator is available and can be exited and this indicator will unshift and ...
User Guide - Page 9
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 want to perform this mode:
COMP CMPLX
STAT
BASE-N
EQN MATRIX
TABLE
VECTOR
(2) Press the ...
User Guide - Page 10
... Display Contrast" for information about how to 10) controls the number of
decimal places for displayed calculation results. Calculation results are rounded off to 9) controls the number of significant digits for displayed calculation results. Math
Math Format
Linear Format
Specifying the Default Angle Unit
To specify this as the default
angle unit:
Perform this...
User Guide - Page 14
... input mode is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to make room when you input a ...The procedure you should use the insert mode. See "Incorporating a Value into a Function" for Linear format input is the insert mode. k Correcting an Expression
This section explains how to Math.
...
User Guide - Page 23
... closed parenthesis ( ) ) immediately preceding operation of the = key at the end of Linear format. This is displayed in the case of a calculation.
Math Format
Improper Fraction
Mixed Fraction
7 3
2
1 3
('7c3) (1'(()2e1c3)
7 { 3
2 { 1 { 3
Linear Format
Numerator Denominator Integer Part
Denominator
Numerator
(7'3)
(2'1'3)
• Under initial default settings, fractions...
User Guide - Page 26
... the input/output format, or perform any reset operation.
• Calculation history memory is deleted automatically to make room for the previous calculation.
Modes that calculation history memory contents are performing causes calculation history memory to become full, the oldest calculation is limited. If you are using Linear format, you input and execute, and its result.
User Guide - Page 31
...; log2Y is solved for X.)
• Unless you are using contains more than one . E-29 Appendix
Calculate an +1 = an + 2n (a1 = 1) as XY + C = 0.)
• SOLVE cannot be used to solve an equation.
Example: Y = X + 5, Y (Solves for X.
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...
User Guide - Page 36
... the COMP Mode only. • The integration result will interrupt an ongoing integration calculation.
A default value of 10 (common logarithm) is used as constants.)
a: Integration interval lower limit b: Integration interval upper limit tol: Tolerance range (input/output format: Linear) • You can omit specification of positive and negative values in the CMPLX...
User Guide - Page 38
...of the local maximum point and local minimum point in the COMP Mode only. • When performing a differential calculation involving trigonometric
functions, specify Rad as constants.)
a: Input a value to take more time. inclusion of the tolerance ... errors can be obtained (differential point)
tol: Tolerance range (input/output format: Linear) • You can be performed in
x values -
User Guide - Page 42
... left.
Formats Supported for S-D Transformation S-D transformation can use S-D transformation to one of the following equation are
equal:
Σ e
∞
=
n = 0
1 n!
Transform the value 123 ...decimal value. Transforming Displayed Values
You can be used to transform a displayed decimal calculation result to transform a value between standard form and decimal form. k Using S-D...
User Guide - Page 45
...
two different lines. Example 2: '2 ∠ 45 = 1 + i
(Angle Unit: Deg)
MATH
CMPLX
Math
!2e1y(∠)45=
Examples of Calculation Results Using Polar
Coordinate Format (r ∠ θ)
Example 1: 2 × ('3 + i) = 2'3 + 2i = 4 ∠ 30
(Angle Unit: Deg)
MATH
CMPLX
Math
2*(!3e+i)=
• With Linear format, the absolute value and argument are shown in two different lines.
User Guide - Page 49
... switches to the STAT menu depends on the STAT editor screen. Pressing the A key while the STAT editor screen is for calculating the mean, standard deviation, etc.
The STAT calculation screen also uses Linear format, regardless of the current input/output format setting on the display, press 11(STAT) to do this menu item...
User Guide - Page 50
... to obtain this:
1n 2o 3xσn 4xσn-1
Number of samples Mean of the sample data Population standard deviation Sample standard deviation
MinMax Sub-menu (11... about the calculation
formula used for normal distribution calculations • For more information, see "Commands when Linear
Regression Calculation (A+BX) Is Selected" and "Commands when Quadratic Regression Calculation (_+CX2) ...
User Guide - Page 52
...Linear Regression Calculation (A+BX) Is Selected With linear regression, regression is selected as the statistical calculation type. See Appendix for information about the calculation
...Number of samples Mean of the X-data Population standard deviation of the X-data Sample standard deviation of the X-data Mean of the ...linear regression is performed in accordance with the following model equation.
User Guide - Page 53
...calculation formula used for linear regression calculations. E-51
Appendix Quadratic Regression Calculation: to • Examples through all use the data input in Example .
*1 Estimated Value (y = -3 → m = ?) *2 Estimated Value (x = 2 → n = ?)
Commands when Quadratic Regression Calculation...value of samples, mean, standard deviation), ...constant term A Linear coefficient B ...
User Guide - Page 57
... 0 4 aX3 + bX2 + cX + d = 0
Equation Type
Simultaneous Linear Equations with Two Unknowns
Simultaneous Linear Equations with a minus sign.
k Equation Types
An equation type menu appears when you want to input this section are ...Equation
Cubic Equation
Changing the Current Equation Type Setting Press N5(EQN) to press Ab first. Appendix
Examples through show examples of calculations...
User Guide - Page 58
...clear all coefficients to zero by the currently selected equation type. E-56 Simultaneous linear equations with two unknowns
Cubic equation
Rules for the equation. • Each press of = displays the ..., the cursor moves to the next cell to the right. • When simultaneous linear equations with Linear format. • Pressing A while inputting data clears your current input. • ...
User Guide - Page 59
...and Z).
• When there are multiple solutions for configuring dimension settings. Appendix Equation Calculation: to
Matrix Calculations (MATRIX)
You can save matrices under the names "MatA", "MatB", and "... you cannot transform values to engineering notation while an equation solution is displayed.
• In the case of simultaneous linear equations, you can use f and c to switch the...
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