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-3-5 -3 1 2 1 A= 23 andB= 44 -541 Given the following descriptions. determine the following elementary matrices and their intrerses. a. The elementary matrix E] multiplies the first row of A by 1r'. h. The elementary matrix Eg multiplies the second row of A by -3. Ez= .E;]= Es = .E;' = d. The elementary matrix E4 adds 5 times the rst row of A to the second row of A. e. The elementary matrix E5 multiplies the second row of B by HE. E5: HES1: f. The Elementary matrix E5 rnuttlpllas the third row of B by- -4. Es: I, II: II I .35: I g. ThealammtaryrhatrhtEg swttdtesthaftrndthlrdmwsut. 3,: |, || || i_i 3_I' '1 I h. Theatemantaryrnatrtha addstlmasthathlml ruwuthnthasamhd mwn'fB. I II II I I_ I: I II II I I: I I