Texas Instruments TI-89 Titanium Short User Manual page 182

2ndOrderOde
deSolve(
boundaryCondition2
dependentVar
Returns a particular solution that satisfies
2ndOrderOde
different points.
det()
MATH/Matrix menu
squareMatrix
det(
Returns the determinant of
Optionally, any matrix element is treated as zero
if its absolute value is less than
is used only if the matrix has floating-point
entries and does not contain any symbolic
variables that have not been assigned a value.
Otherwise,
• If you use ¥ ¸ or set the mode to
Exact/Approx=APPROXIMATE
are done using floating-point arithmetic.
• If
tol
tolerance is calculated as:
5 ë 14 ù max(dim(
E
ù rowNorm(
diag()
MATH/Matrix menu
) ⇒
list
diag(
rowMatrix
diag(
columnMatrix
diag(
Returns a matrix with the values in the argument
list or matrix in its main diagonal.
squareMatrix
diag(
Returns a row matrix containing the elements
from the main diagonal of
squareMatrix
176
boundaryCondition1
and
independentVar
, ,
) ⇒
a particular solution
and has specified values at two
) ⇒
tol expression
[ ]
,
squareMatrix
tol is ignored.
is omitted or not used, the default
squareMatrix
squareMatrix
)
matrix
) ⇒
matrix
) ⇒
matrix
) ⇒
rowMatrix
squareMatrix
must be square.
and deSolve(w''ì 2w'/x+(9+2/x^2)w=
xù
w(p/3)=0,x,w) ¸
det([a,b;c,d]) ¸
.
det([1,2;3,4]) ¸
det(identity(3) ì xù [1,ë 2,3;
. This tolerance
tol
ë 2,4,1;ë 6,ë 2,7]) ¸
[1
, computations
det(mat1) ¸
det(mat1,.1) ¸
))
diag({2,4,6}) ¸
[4,6,8;1,2,3;5,7,9] ¸
.
diag(ans(1)) ¸
Appendix A: Functions and Instructions
e
^(x) and w(p/6)=0 and
w=
p
øxøsin(3øx)
e
6
ì
ë (98ø xò ì 55ø xñ + 12ø x ì 1)
20,1;0,1]!mat1
E
p
øxøcos(3øx)
e
3
10
x⋅e
x
+
10 10
aø d ì bø c
ë 2
1. 20 1
E
[ ]
0 1
0
1. 20
E
 
2 0 0
 
0 4 0
 
0 0 6
 
4 6 8
 
1 2 3
 
5 7 9
[4 2 9]