Casio ALGEBRA FX 2.0 PLUS Function Manual page 6

Using the CAS (Computer Algebra System) Mode
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Example To assign M to row 1 column 2 of variable A when the matrix
is assigned to it
ah(M)aav(A)
!+( [ )b,c!-( ] )w
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Example To recall the value of variable A when the list {X, Y, Z} is assigned to it
av(A)w
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Example To recall the first component (A [1]) of variable A when vector (X Y Z) is
assigned to it
av(A)!+( [ )b
!-( ] )w
7-1-5
20010102
1 2 3
X Y Z