Row operations?

Question

Answer 1

a)

ρ2 ---> ρ2 -5ρ1

From above properties

Reverse of the given row operation

ρ2 ---> ρ2 + 5ρ1

Option 4 is correct.

 

b)

ρ1 ---> ρ1/5

From above properties

Reverse of the given row operation

ρ1 ---> 5ρ1

Option 1 is correct.

c)

ρ3 <---> ρ4

From above properties

Reverse of the given row operation

ρ4 <---> ρ3

Option 4 is correct.