HP 39gs Graphing Calculator Manual de usuario descargar pdf (Pagina 195)

Matrices 15-7

3. Add the matrices that

you created.

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:

To multiply two

matrices

To multiply the two matrices M1 and M2 that you created

for the previous example, press the following keys:

M1 M

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.

To raise a matrix to

a power

You can raise a matrix to any power as long as the power

is an integer. The following example shows the result of

raising matrix M1, created earlier, to the power of 5.

M1 5

Note: You can also raise a

matrix to a power without

first storing it as a variable.

Matrices can be raised to negative powers. In this case,

the result is equivalent to 1/[matrix]^ABS(power). In the

following example, M1 is raised to the power of –2.

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HP 39gs Graphing Calculator Manual de usuario Pagina 195