Concept explainers
a.
To find
a.
Answer to Problem 150E
The difference 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 difference of both matrices is,
b.
To find
b.
Answer to Problem 150E
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:
Calculate
c.
To find
c.
Answer to Problem 150E
The product
Explanation of Solution
Given:
The matrices are,
Concept Used:
If
Calculation:
In order to find product of below matrices AB
First check if this product is possible.
Note that here number of columns of A is 2 and the number of rows of B is 2.
Thus, product of given matrices is possible.
Calculate the product
d.
To find
d.
Answer to Problem 150E
The product
Explanation of Solution
Given:
The matrices are,
Concept Used:
If
Calculation:
In order to find product of below matrices BA.
First check if this product is possible.
Note that here number of columns of Bis 2 and the number of rows of Ais 2.
Thus, product of given matrices ispossible.
Calculate the product
Chapter 8 Solutions
Precalculus with Limits: A Graphing Approach
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