Most Important Selected Qs for JEE AdvancedMathematicsInverse Trigonometric Functions
The value(s) of satisfying the equation [ ( ⁻¹ ⁻¹ x ) ]= , (where x R and [.] denotes the greatest integer function) is/are
Options
- A0
- B2
- C3 2
Correct answer
C. 3 2
Step-by-step solution
We have ( ⁻¹ ⁻¹ x )= ( ⁻¹ ) , where = ⁻¹ x= ⁻¹ 1 1+ ^2 = ⁻¹ 1 1+x^2 = 1+x^2 2+x^2 Now for all x R, 0 1+x^2 2+x^2 1 , then [ ( ⁻¹ ⁻¹ x ) ]= [ 1+x^2 2+x^2 ]=0 The equation is =0 = n , n I