HP Prime Graphing Wireless Calculator Uživatelský manuál Strana 575

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Multiplying two matrices
To multiply the two matrices that you created for the previous example, press the following keys:
1 2
To multiply a matrix by a vector, enter the matrix rst, then the vector. The number of elements in the vector
must equal the number of columns in the matrix.
Raising 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.
1 5
You can also raise a matrix to a power without rst storing it as a variable.
Matrices can also 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.
Matrix arithmetic 527
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