Appendix A: Functions and Instructions 231
round(
matrix1
[,
digits
]) ⇒
matrix
Returns a matrix of the elements rounded to the
specified number of digits.
round([ln(5),ln(3);p,
e
^(1)],1)
¸
[
1.6 1.1
3.1 2.7
]
rowAdd() MATH/Matrix/Row ops menu
rowAdd(
matrix1
,
rIndex1
,
rIndex2
) ⇒
matrix
Returns a copy of
matrix1
with row
rIndex2
replaced by the sum of rows
rIndex1
and
rIndex2
.
rowAdd([3,4;ë 3,ë 2],1,2) ¸
3 4
0 2
rowAdd([a,b;c,d],1,2)
¸
[
a
a+c
b
b+d
]
rowDim() MATH/Matrix/Dimensions menu
rowDim(
matrix
) ⇒
expression
Returns the number of rows in
matrix
.
Note: See also
colDim().
[1,2;3,4;5,6]! M1 ¸
1 2
3 4
5 6
rowdim(M1)
¸ 3
rowNorm() MATH/Matrix/Norms menu
rowNorm(
matrix
) ⇒
expression
Returns the maximum of the sums of the absolute
values of the elements in the rows in
matrix
.
Note: All matrix elements must simplify to
numbers. See also
colNorm().
rowNorm([-5,6,-7;3,4,9;9,-9,-7])
¸ 25
rowSwap() MATH/Matrix/Row ops menu
rowSwap(
matrix1
,
rIndex1
,
rIndex2
) ⇒
matrix
Returns
matrix1
with rows
rIndex1
and
rIndex2
exchanged.
[1,2;3,4;5,6]! Mat ¸
1 2
3 4
5 6
rowSwap(Mat,1,3)
¸
5 6
3 4
1 2
RplcPic CATALOG
RplcPic
picVar
[,
row
][,
column
]
Clears the Graph screen and places picture
picVar
at pixel coordinates (
row
,
column
). If you do not
want to clear the screen, use
RclPic.
picVar
must be a picture data type variable.
row
and
column
, if included, specify the pixel
coordinates of the upper left corner of the picture.
Default coordinates are (0, 0).
Note: For less than full-screen pictures, only the
area affected by the new picture is cleared.
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