Calculator User Manual

322
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 322 of 118
matrixA ¹ matrixB
Returns a matrix in which
matrixA
is multiplied by
matrixB
. The number of columns in
matrixA
must
equal the number of rows in
matrixB
.
[[2,2][3,4]]
¶
MATA
b
[[2 2]
[3 4]]
[[1,2,3][4,5,6]]
¶
MATB
b
[[1 2 3]
[4 5 6]]
MATA
¹
MATB
b
[[10 14 18]
[19 26 33]]
multR(
MATRX OPS menu
multR(
number
,
matrix
,
row
)
Returns the result of a “row multiplication” matrix
operation, where:
a. The specified
row
of a real or complex
matrix
is
multiplied by a real or complex
number
.
b. The results are stored in the same
row
.
[[5,3,1][2,0,4][3,
L
1,2]]
¶
MAT
b
[[5 3 1]
[2 0 4]
[3
L
1 2]]
multR(5,MAT,2)
b
[[5 3 1 ]
[10 0 20]
[3
L
1 2 ]]
nCr
MATH PROB menu
items
nCr
number
Returns the number of combinations of
items
(
n
) taken
number
(
r
) at a time. Both arguments must be real
nonnegative integers.
5 nCr 2
b
10