Question

EXERCISE (E)
Find the rank of following matrices :
1 1 1 - 1
1 2 3 4
3 4 5 2​

Answer 1

Step-by-step explanation:

the rank of the matrix is equal to the number of non.-zero rows in the matrix after reducing it to the echelon form Give matrix

A= {111}

{111}

{111}

R2-R2-R1

A {111}

{000}

{111}

R3-R3-R1

A- {111}

{000}

{000}

Hence the non - zero row in the above matrix is 1

therefore,rank is 1.