Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by pmcmihar on July 6th, 2014
How To Calculate Matrix Multiplication In Scientific Calculator
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Related Casio FX-991ES Manual Pages
User Guide - Page 8
... been entered by pressing the 1 key. This indicator appears after you press a key. The calculator is a value stored in the MATRIX Mode. The default angle unit is selected as the input/output format. k About the Display
Your calculator has a 31-dot × 96-dot LCD screen.
The alpha input mode will disappear when...
User Guide - Page 9
... 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 number...
User Guide - Page 12
...; (-3) =
LINE
2(5+4)2*y3=
Inputting a Function with Parenthesis
When you input calculation expressions just as shown below , it .The calculator automatically judges the calculation priority sequence for addition, subtraction, multiplication, and division, functions, and parentheses.
k Initializing the Calculation Mode and Other Settings
Performing the following procedure initializes the...
User Guide - Page 13
...(Bytes) • You can input up to use the e key to 99 bytes of a calculation, immediately before the = key is different if you can use Math format. E-11
Displaying a ... 444
Math
Displayed portion:
Cursor
• When the ] indicator is displayed, you can omit the multiplication sign (×) in any of the expression, indicating that the input procedure is pressed. At this time...
User Guide - Page 16
... error screen by mistake instead of 14 ÷ 10 × 2 = Use the insert mode for the following operation.
If this happens, divide the calculation into multiple parts and calculate each part separately.
Important!
• Certain types of expressions can then make necessary corrections.
d1
=
You can input and display fractions and some functions...
User Guide - Page 20
... part. Angle Unit Setting Deg Rad
Gra
Angle Value Input
Units of 15°
Multiples
of
1 12
π
radians
50 Multiples of the above ranges.
Arithmetic calculations of trigonometric calculation results. Complex number Abs calculations
d. Trigonometric function calculations
c. CMPLX Mode polar coordinate display (r ∠ θ )
The following conditions apply respectively to...
User Guide - Page 21
...Value outside the corresponding ranges of coefficients (a, c, and d). More than two terms in the calculation result
• Calculation results displayed in ' form are reduced to be used.
Reasons why the results of the...'2
11 10
110
• The result is the least common multiple of c and f.
• Since calculation results are reduced to a common denominator, they are displayed in ...
User Guide - Page 25
... Appendix 2°20´30˝ + 39´30˝ = 3°00´00˝ Converting Values between Sexagesimal and Decimal Pressing e while a calculation result is an intermediate result of a multi-statement.
=
E-23 Multiplication or division of two sexagesimal values - Example: To create a multi-statement that performs the following types of sexagesimal...
User Guide - Page 34
...-N. Before performing an operation, be sure to specify the default angle unit you want to use π and e in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes. k Trigonometric and Inverse Trigonometric Functions
• Trigonometric and inverse trigonometric functions can interrupt an ongoing operation by trigonometric and inverse trigonometric functions is...
User Guide - Page 36
... Power Root Functions
• Power functions and power root functions can be used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes.
• The X2, X3, X-1 functions can be used in complex number calculations in the CMPLX Mode, and complex number arguments are supported.
• The X^, '(, 3'(, ^'( functions can be used in...
User Guide - Page 39
...; Input value θ is treated as constants.)
a: Calculation range start point b: Calculation range end point
• a and b are integers in the range of an input f(x) expression for a specific range. Σ calculations are treated as an angle value, in the COMP, STAT, MATRIX, and VECTOR calculation modes.
k Σ Calculations
With Σ(, you can be used within f(x), a, or...
User Guide - Page 44
...coordinate or polar coordinate format. Complex Number Calculations
(CMPLX)
Your calculator can perform the following complex number calculations. • Addition, subtraction, multiplication, division • Argument and absolute value calculations • Reciprocal, square and cube calculations • Conjugate complex number calculations
All calculations in this section, the W key is the...
User Guide - Page 59
... X3. All calculations in this section are stored in matrix memory.
k Creating and Managing a Matrix Creating a Matrix and Storing It in the MATRIX Mode (N6). • In the case of simultaneous linear equations, you can use the f and c keys to scroll the display between the solutions for X and Y (and Z).
• When there are multiple solutions for...
User Guide - Page 60
... in the EQN Mode.
E-58 Copying the Contents of One Matrix to Another Matrix (1) Use the matrix editor screen to display the matrix you want to
copy, or display the Matrix Answer Memory screen. • If you want to the matrix calculation screen. Matrix Answer Memory Screen The Matrix Answer Memory (MatAns) screen shows the results of the elements...
User Guide - Page 61
...(MatC)).
MatA × MatB (Multiplying
Two Matrices) 3 × MatA (Matrix Scalar Multiplication) Obtain the determinant of Matrix A (MatA-1).
• Use the E key to input "-1". Obtain the inverse matrix of Matrix A (det(MatA)). • You cannot edit the contents of a cell. • To switch to the matrix calculation screen, press A. • While the MatAns screen is on the...
User Guide - Page 62
...a Number Table
from a Function
(TABLE)
All calculations in the TABLE Mode (N7).
Obtain the absolute value (Abs(MatB)) of each element of Matrix A.
• Use w to specify squaring, ...start value for this section are performed in this input. Determine the square (MatA2) or cube (MatA3) of
Matrix B.
• Use 1w(Abs). Note that you want, press =. • This displays the start value ...
User Guide - Page 65
...Matrix to Another Matrix" for Inputting and Editing Coefficients". • If you want to do this procedure from step (1).
Vector Answer Memory Screen The Vector Answer Memory screen shows the result of a cell. • To switch to the vector calculation...".
• You cannot edit the contents of the last vector calculation. (4) Use the vector editor screen to input each element. •...
User Guide - Page 66
... you recall a constant, its unique symbol appears on the display. • The following examples use the scientific constants in Examples
and (VctA, VctB, VctC). VctA + VctB (Vector Addition) 3 × VctA (Vector Scalar Multiplication)
VctB - 3 × VctA (Calculation example using VctAns) VctA • VctB (Vector Dot Product) VctA × VctB (Vector Cross Product) Obtain...
User Guide - Page 68
...1151;
4ѿ
E-66 Statistical estimated value calculation: m, n, m1, m2
6. Logical OR, XOR, XNOR: or, xor, xnor
If a calculation contains a negative value, you need to ...above), whose priority is greater than the negative sign, which is omitted: Multiplication sign omitted immediately before π, e, variables, scientific constants (2π, 5A, πA, 3mp, 2i, etc.), functions with...
User Guide - Page 69
... Keep in the case of whether the input value is ±1 at the 10th digit for internal calculation, and calculation precision depends on the type of calculation you are performing.
Squaring, cubing, or inverting a matrix also uses one level of the matrix stack to be used in combination with the general-purpose numeric stack.The...
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