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Let A =[(x1,y1),(x2,y2)] be a non-singu...

Let `A =[(x_1,y_1),(x_2,y_2)]` be a non-singular square matrix such that `A[(alpha),(beta)]=[(1),(1)]`.Let on xy plane, thedistance between points `A(x_1, y_1) and B(x_2, y_2)` is ` 'd'` and the point having coordinates .is situated at distance ` 'p'` from the origin (0), then the area of `DeltaOAB`, is

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