Answer to Question #173503 in Linear Algebra for ANJU JAYACHANDRAN

Question #173503

7(b) Is the set of vectors {( ),3,2,1 ),1,4,3( )}2,3,2( linearly independent? Give reasons for 

the answer. (3) 

 

6 4 1 5 14 

8 9 2 7 16 

4 3 6 2 5 

6 10 15 4


1
Expert's answer
2021-04-15T07:20:21-0400

The co-efficient matrix for the given set of vectors is\text{The co-efficient matrix for the given set of vectors is}

(321143232)\begin{pmatrix} 3 & 2 & 1 \\ 1 & 4 & 3 \\ 2 & 3 & 2 \end{pmatrix} \\

the determinant of the matrix is

3(89)2(4)5=03(8-9)-2(-4)-5=0

Since the determinant is 0, the inverse doesn’t exist, it has non-trivial solutions\text{Since the determinant is 0, the inverse doesn't exist, it has non-trivial solutions}

The set of vectors is not linearly independent\text{The set of vectors is not linearly independent}


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