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348
Chapter 20: A to Z Function and Instruction Reference
20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 348 of 118
round(
MATH NUM menu
round(
number
,
#ofDecimals
)
round(
number
)
Returns a real or complex number rounded to the
specified #ofDecimals (0 to 11). If #ofDecimals is
omitted, number is rounded to 12 decimal places.
specified #ofDecimals (0 to 11). If #ofDecimals is
omitted, number is rounded to 12 decimal places.
round(
p,4) b
3.1416
round(
p/4,4) b
.7854
round(
p/4) b
.785398163397
round(
list
,
#ofDecimals
)
round(
matrix
,
#ofDecimals
)
round(
vector
,
#ofDecimals
)
Returns a list, matrix, or vector in which each element
is the rounded value of the corresponding element in
the argument. #ofDecimals is optional.
is the rounded value of the corresponding element in
the argument. #ofDecimals is optional.
round({
p,‡2,ln 2},3) b
{3.142 1.414 .693}
round([[ln 5,ln 3][
p,e^1]],2)
b
[[1.61 1.1 ]
[3.14 2.72]]
rref
MATRX OPS menu
rref
matrix
Returns the reduced row-echelon form of a real or
complex matrix. The number of columns must be
greater than or equal to the number of rows.
complex matrix. The number of columns must be
greater than or equal to the number of rows.
[[4,5,6][7,8,9]]¶MAT b
[[4 5 6]
[7 8 9]]
rref MAT b
[[1 0
L
.999999999999…
[0 1 2 …
rSwap(
MATRX OPS menu
rSwap(
matrix
,
rowA
,
rowB
)
Returns a matrix with rowA of a real or complex matrix
swapped with rowB.
swapped with rowB.
[[5,3,1][2,0,4][3,
L
1,2]]¶MAT
b
[[5 3 1]
[2 0 4]
[3
L
1 2]]
rSwap(MAT,2,3) b
[[5 3 1]
[3
L
1 2]
[2 0 4]]