822
Appendix A: Functions and Instructions
nPr(
matrix1
,
matrix2
)
⇒
matrix
Returns a matrix of permutations based on the
corresponding element pairs in the two matrices.
The arguments must be the same size matrix.
nPr([6,5;4,3],[2,2;2,2])
¸
[
30 20
12 6
]
nSolve()
MATH/Algebra menu
nSolve(
equation
,
varOrGuess
)
⇒
number or error_string
Iteratively searches for one approximate real
numeric solution to
equation
for its one variable.
Specify
varOrGuess
as:
variable
– or –
variable
=
real number
For example,
x
is valid and so is
x=3
.
nSolve(x^2+5x
ì
25=9,x)
¸
3.844
...
nSolve(x^2=4,x=
ë
1)
¸
ë
2.
nSolve(x^2=4,x=1)
¸
2.
Note:
If there are multiple solutions, you can
use a guess to help find a particular solution.
nSolve()
is often much faster than
solve()
or
zeros()
, particularly if the “|” operator is used to
constrain the search to a small interval containing
exactly one simple solution.
nSolve()
attempts to determine either one point
where the residual is zero or two relatively close
points where the residual has opposite signs and
the magnitude of the residual is not excessive. If it
cannot achieve this using a modest number of
sample points, it returns the string “
no solution
found
.”
If you use
nSolve()
in a program, you can use
getType()
to check for a numeric result before using
it in an algebraic expression.
Note:
See also
cSolve()
,
cZeros()
,
solve()
, and
zeros()
.
nSolve(x^2+5x
ì
25=9,x)|x<0
¸
ë
8.844
...
nSolve(((1+r)^24
ì
1)/r=26,r)|r>
0 and r<.25
¸
.0068
...
nSolve(x^2=
ë
1,x)
¸
"no solution found"
OneVar
MATH/Statistics menu
OneVar
list1
[
[,
list2
]
[,
list3
] [
,
list4
]
]
Calculates 1-variable statistics and updates all the
system statistics variables.
All the lists must have equal dimensions except for
list4
.
list1
represents xlist.
list2
represents frequency.
list3
represents category codes.
list4
represents category include list.
Note:
list1
through
list3
must be a variable name or
c1–c99 (columns in the last data variable shown in
the Data/Matrix Editor).
list4
does not have to be a
variable name and cannot be c1–c99.
{0,2,3,4,3,4,6}
!
L1
¸
OneVar L1
¸
Done
ShowStat
¸
Summary of Contents for Titanium TI-89
Page 9: ...Getting Started 6 TI 89 Titanium keys Ë Ì Í Ê ...
Page 34: ...Getting Started 31 2 or D 2 B u s i n e s s D B D B Press Result ...
Page 43: ...Getting Started 40 3 0 D B D D B D Press Result ...
Page 44: ...Getting Started 41 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 58: ...Getting Started 55 Example Set split screen mode to TOP BOTTOM Press Result 3 B D ...
Page 70: ...Getting Started 67 ...
Page 175: ...Operating the Calculator 172 From the Keyboard ...
Page 456: ...Tables 453 ...
Page 527: ...Data Matrix Editor 524 ...
