HP 15c - Manual (Page 152)

152 Section 12: Calculating with Matrices
Operation
Elements of Result Matrix*
Matrix in Y-Register Scalar in Y-Register
Scalar in X-Register Matrix in X-Register
+
Adds scalar value to each matrix element.
*
Multiplies each matrix element by scalar value.
-
Subtracts scalar value
from each matrix
element. Subtracts each matrix
element from scalar value.
÷
Divides each matrix
element by scalar value. Calculates inverse of matrix
and multiplies each element
by scalar value.
* Result matrix may be the specified matrix.
Example: Calculate the matrix B = 2A. then subtract 1 from every element
in B. From before, use







9 5 4
3 2 1
A .
Keystrokes Display
´<B
Designates matrix B as result
matrix.
l> A A 2 3
Displays descriptor of matrix A.
2
* b 2 3
Redimensions matrix B to the
same dimensions as A, multiplies
the elements of A by 2, stores
those values in the corresponding
elements of B, and displays the
descriptor of the result matrix.