Texas TI-86 用户手册
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
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]]
MATA¹MATB 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:
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