Q.The pair of straight lines $ax^2 + 2hxy + by^2 = 0$ are equally inclined to the pair $ax^2 + 2hxy + by^2 + \lambda(x^2 + y^2) = 0$ if

\lambda = 0

\lambda = a + b

\lambda = a - b

\lambda = \pm \sqrt{ab}

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.The pair of straight lines ax2+2hxy+by2=0ax^2 + 2hxy + by^2 = 0ax2+2hxy+by2=0 are equally inclined to the pair ax2+2hxy+by2+λ(x2+y2)=0ax^2 + 2hxy + by^2 + \lambda(x^2 + y^2) = 0ax2+2hxy+by2+λ(x2+y2)=0 if