Texas Instruments TI-86 - Manual (Page 334)

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]]
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:
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