From A Point On The Line Y = X + C, C (parameter), Tangents Are Drawn To The Hyperbola  such That Chords Of Contact Pass Through A Fixed Point (x1, y1). Then  is Equal To

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Question

From a point on the line y = x + c, c (parameter), tangents are drawn to the hyperbola  such that chords of contact pass through a fixed point (x1y1). Then  is equal to

Solution

Correct option is

2

Let the point be 

Chord of contact of hyperbola T = 0

               

  

Since this passes through point (x1y1)

∴  x1 = 2y1 and y1c + 1 = 0

SIMILAR QUESTIONS

Q1

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x2 – (a + b)x – 4 = 0, then value of (a, b) is equal to

Q2

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Q3

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Q4

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2x – y = 5 is

Q5

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Q6

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Q7

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Q8

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Q9

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Q10

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