Calculator User Manual

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.
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.
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.
[[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
.
[[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]]