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AP EAMCET2004MathematicsCircle

If (1, a),(b, 2) are conjugate points with respect to the circle x^2+y^2=25 , then 4 a+2 b is equal to

Options

  1. A25
  2. B50
  3. C100
  4. D150

Correct answer

B. 50

Step-by-step solution

Since, (1, a) and (b, 2) are the conjugate point of a circle, therefore point (1, a) satisfy the equation (iii), we get aligned b+2 a & =25 2 b+4 a & =50 aligned

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