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KCET2009MathematicsSequences and Series

If 1+ x+ ² x+ upto =4+2 3 , 0 < x < and x 2 , then x is equal to

Options

  1. A3 , 5 6
  2. B2 3 , 6
  3. C3 , 2 3
  4. D6 , 3

Correct answer

C. 3 , 2 3

Step-by-step solution

Given, 1+ x+ ² x+ =4+2 3 1 1- x =4+2 3 1- x= 1 4+2 3 4-2 3 4-2 3 1- x= 4-2 3 4 x= 2 3 4 = 3 2 x= 3 , 2 3

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