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Casio fx-9750GII User Manual

Casio fx-9750GII
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2-47
Only square matrices (same number of rows and columns) can be inverted. Trying to invert a
matrix that is not square produces an error.
A matrix with a determinant of zero cannot be inverted. Trying to invert a matrix with
determinant of zero produces an error.
Calculation precision is affected for matrices whose determinant is near zero.
A matrix being inverted must satisfy the conditions shown below.
AA
–1
= A
–1
A = E =
10
01
The following shows the formula used to invert Matrix A into inverse matrix A
–1
.
A =
ab
cd
A
–1
=
1
ad – bc
d–b
–c a
Note that ad – bc x 0.
S Squaring a Matrix [x
2
]
Example To square the following matrix:
Matrix A =
*(MAT)(Mat)?T(A)VU
S Raising a Matrix to a Power [^]
Example To raise the following matrix to the third power:
Matrix A =
*(MAT)(Mat)?T(A)
,BU
For matrix power calculations, calculation is possible up to a power of 32766.
S Determining the Absolute Value, Integer Part, Fraction Part, and Maximum
Integer of a Matrix
[OPTN]-[NUM]-[Abs]/[Frac]/[Int]/[Intg]
Example To determine the absolute value of the following matrix:
Matrix A =
*(E)(NUM)(Abs)
*(MAT)(Mat)?T(A)U
12
34
12
34
12
34
12
34
1 2
–3 4
1 2
–3 4

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Casio fx-9750GII Specifications

General IconGeneral
TypeGraphing
Cover-
Form factorDesktop
Control typeButtons
Product colorBlue
Digits- digits
Display tiltingNo
Display resolution64 x 128 pixels
Display number of lines8 lines
Display number of characters21
Battery typeAAA
Power sourceBattery
Auto power offYes
Number of batteries supported4
Flash memory0.061 MB
Storage media typeFlash
Symbolic notationSquare root
Conversion betweenDecimal, Percent
Weight and Dimensions IconWeight and Dimensions
Depth180.5 mm
Width87.5 mm
Height21.3 mm
Weight205 g

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