Q1 of 256 Page 7

Evaluate the following determinant:


Applying C3→ C3 – C2, we get,



Applying C2 → C2 + C1, we get,



Applying C2→ C2 – 5C1 and C3 →C3 – 5C1 we get,



= 1[( – 7)( – 36) – ( – 20)( – 13)] = 252 – 260


= – 8


So, Δ = – 8


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