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JEE Advanced Mathematics question

MathematicsStraight LinesJEE Advanced

The straight lines represented by meet at

Answer: (A),(C)

Solution

Here . For a pair of lines,

Δ=1·(-2)(-1)+2·Missing argument for \tfrac\tfrac32·0·Missing argument for \tfrac\tfrac m2-1·(Missing argument for \tfrac\tfrac-(-2)·-(-1)(Missing argument for \tfrac\tfrac =2-Missing argument for \tfrac\tfrac94+=0⇒ =1,\ m=±1 .

The point of intersection comes from $Missing argument for \dfrac\dfrac{

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Question ID VK-108876