a.
To find
a.

Answer to Problem 15E
The sum is
Explanation of Solution
Given information:
The matrices are,
Concept used:
Operations like addition and subtraction of matrices are only possible when they are of same dimension.
Dimension of matrix with a rows and b columns is given by
If a matrix is multiplied by a scalar then each element of the matrix is multiplied by the same scalar.
Calculation:
The sum of both matrices is,
Now, by graphing utility of matrix capability,
Hence, the result is verified.
b.
To find
b.

Answer to Problem 15E
The differenceis
Explanation of Solution
Given information:
The matrices are,
Concept used:
Operations like addition and subtraction of matrices are only possible when they are of same dimension.
Dimension of matrix with a rows and b columns is given by
If a matrix is multiplied by a scalar then each element of the matrix is multiplied by the same scalar.
Calculation:
The difference of both matrices is,
Now, by graphing utility of matrix capability,
Hence, the result is verified.
c.
To find
c.

Answer to Problem 15E
Explanation of Solution
Given information:
The matrices are,
Concept used:
Operations like addition and subtraction of matrices are only possible when they are of same dimension.
Dimension of matrix with a rows and b columns is given by
If a matrix is multiplied by a scalar then each element of the matrix is multiplied by the same scalar.
Calculation:
Now, by graphing utility of matrix capability,
Hence, the result is verified.
d.
To find
d.

Answer to Problem 15E
The differenceis
Explanation of Solution
Given information:
The matrices are,
Concept used:
Operations like addition and subtraction of matrices are only possible when they are of same dimension.
Dimension of matrix with a rows and b columns is given by
If a matrix is multiplied by a scalar then each element of the matrix is multiplied by the same scalar.
Calculation:
The difference is,
Now, by graphing utility of matrix capability,
Hence, the result is verified.
Chapter 7 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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