Texas Instruments TI-86 Manual Book page 286

274
Chapter 20: A to Z Function and Instruction Reference
+
Concatenation:
\
cond
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cnorm vector
Returns the sum of the absolute values of the real or
complex elements in vector.
stringA + stringB
Returns a string consisting of stringB appended
(concatenated) to the end of stringA.
cond squareMatrix
Returns the condition number of a real or complex
squareMatrix, which is calculated as:
squareMatrix ¹
cnorm
The condition number indicates how well-behaved
squareMatrix is expected to be for certain matrix
functions, particularly inverse. For a well-behaved
matrix, the condition number is close to 1.
log(cond squareMatrix
that may be lost due to round-off errors in computing
the inverse.
For a matrix with no inverse,
L1
cnorm squareMatrix
) indicates the number of digits
cond returns an error.
3]¶VEC b
L L
[ 1,2,
cnorm VEC b
"your name:"¶STR b
your name:
"Enter "+STR b
Enter your name:
[[1,0,0][0,1,0][0,0,1]]¶MAT1
b
cond MAT1 b
log (Ans) b
[[1,2,3][4,5,6][7,8,9]]¶MAT2
b
cond MAT2 b
log (Ans) b
14.2552725051
L L
[ 1 2 3]
6
[[1 0 0]
[0 1 0]
[0 0 1]]
1
0
[[1 2 3]
[4 5 6]
[7 8 9]]
1.8 14
E