JEE Main2013MathematicsStraight LinesActual
Let x (0,1) . The set of all x such that ⁻¹ x> ⁻¹ x , is the interval:
Options
- A( 1 2 , 1 2 )
- B( 1 2 , 1 )
- C(0,1)
- D(0, 3 2 )
Correct answer
B. ( 1 2 , 1 )
Step-by-step solution
Given ⁻¹ x> ⁻¹ x where x (0,1) aligned & ⁻¹ x> 2 - ⁻¹ x & 2 ⁻¹ x> 2 ⁻¹ x> 4 & x> 4 x> 1 2 aligned Maximum value of ⁻¹ x is 2 So, maximum value of x is 1 . So, x ( 1 2 , 1 )