113
kk
kk
k Determining the Absolute Value, Integer Part, Fraction
Part, and Maximum Integer of a Matrix
The following is the format for using a matrix in built in functions to obtain an abso-
lute value, integer part, fraction part, and maximum integer.
Function command Matrix
Abs Mat A
Frac
w
Int Mat Z
Intg MatAns
Example To determine the absolute value of the following matrix :
Matrix A =
1 –2
–3 4
K6(g)4(NUM)1(Abs)
K2(MAT)1(Mat)aA
w
This operation produces the following result.
Abs A =
12
34
• Determinants and inverse matrices are calculated using the elimination method,
so errors (such as dropped digits) may be generated.
• Matrix operations are performed individually on each cell, so calculations may
required considerable time to complete.
• The calculation precision of displayed results for matrix calculations is ± 1 at
the least significant digit.
• If a matrix calculation result is too large to fit into Matrix Answer Memory, an
error (Mem ERROR) occurs.
• You can use the following operations to transfer Matrix Answer Memory con-
tents to another matrix (or when Matrix Answer Memory contains a determinant
to a variable).
MatAns " Mat
#
In the above,
#
is a variable name A through Z. The above does not affect the
contents of Matrix Answer Memory.
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Matrix Calculations 6 - 4
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