Q5 of 110 Page 260

Using properties of determinants prove that:



[C1’ = C1 - C2 & C2’ = C2 - C3]



[C1’ = C1/(a - b) & C2’ = C2/(b - c)]


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


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


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