Suppose that:-2 -2-2 -5A =and B =-3 -2-1-21-31Given the following descriptions, determine the following elementary matrices and their inverses.a. The elementary matrix E, multiplies the first row of A by 1/4.E1E,b. The elementary matrix E, multiplies the second row of A by -2.E2E,c. The elementary matrix E3 switches the first and second rows of A.E3Egd. The elementary matrix E, adds 7 times the first row of A to the second row of A.E4 =e. The elementary matrix E, multiplies the second row of B by 1/4.E, =E,' =2. f. The elementary matrix E, multiplies the third row of B by -5.E6E, 1g. The elementary matrix E, switches the first and third rows of B.E,'h. The elementary matrix Eg adds 7 times the third row of B to the second row of B.Eg =E,1

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Suppose that: -2 -2 2 -2 -5 A = and B = -3 -2 -1 -2 1 -3 1 Given the following descriptions, determine the following elementary matrices and their inverses a. The elementary matrix E multiplies the first row of A by 1/4. E E, b. The elementary matrix E, multiplies the second row of A by –2. E2 . E, c. The elementary matrix E3 switches the first and second rows of A. E3 E,