Casio FX-9750G, FX-9860GII SSquaring a Matrix, SDetermining the Absolute Value, Integer Part, Fraction Part, and Maximum, Integer of a Matrix, SRaising a Matrix to a Power, [x2]

•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.

A A–1= A–1A = E =	1	0
	0	1

The following shows the formula used to invert Matrix A into inverse matrix A–1.

A =			a	b
			c	d
A	–1	=		1	d –b
			ad – bc		–c a

Note that ad – bc ξ 0.

SSquaring a Matrix				[x2]
Example	To square the following matrix:
	Matrix A =	1	2
			4
		3

*(MAT)(Mat)?T(A)VU

SRaising a Matrix to a Power			[^]
Example	To raise the following matrix to the third power:
	Matrix A =	1	2
			4
		3

*(MAT)(Mat)?T(A)

,BU

• For matrix power calculations, calculation is possible up to a power of 32766.

SDetermining 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 =	1	–2
			4
		–3

*(E)(NUM)(Abs)

*(MAT)(Mat)?T(A)U

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