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472 Matrices
3. Select the second matrix:
St (Matrix)
Tap M2 or highlight it and press
E.
4. Enter the matrix
elements:
5
E 6
E 7 E
8
E
5. In Home view, add
the two matrices you
have just created.
HA Q1 +
A Q2 E
To multiply and
divide by a scalar
For division by a scalar, enter the matrix first, then the
operator, then the scalar. For multiplication, the order of
the operands does not matter.
The matrix and the scalar
can be real or complex.
For example, to divide
the result of the previous
example by 2, press the
following keys:
n 2 E
To multiply two
matrices
To multiply the two matrices that you created for the
previous example, press the following keys:
AQ1sA
Q
2E
To multiply a matrix by a
vector, enter the matrix
first, then the vector. The
number of elements in
the vector must equal the
number of columns in the
matrix.