Q6 of 110 Page 260

Using properties of determinants prove that:



[R1’ = R1 - R2 & R2’ = R2 - R3]



[R1’ = R1/(b - a) & R2’ = R2/(c - b)]


= (b - a)(c - b)[0 + 0 + 1{(c + b) - (b + a)}] [expansion by first column]


= (a - b)(b - c)(c - a)


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