KCET2014MathematicsBasics of Mathematics
If ( y= ( ⁻¹ x )² ), then ( (x²+1 )² y₂+2 x (x²+1 ) y₁ ) is equal to
Options
- A( 00 )
- B( 11 )
- C( 04 )
- D( 12 )
Correct answer
D. ( 12 )
Step-by-step solution
Given that, ( y= ( ⁻¹ x )² ) So, ( y₁= d y d x = 2 ⁻¹ x 1+x² ) ( d y d x (1+x² )=2 ⁻¹ x ) ( (1+x² ) y₁=2 ⁻¹ x ) Now, ( (1+x² ) y₂+y₁(2 x)= 2 1+x² ) ( (1+x)² y₂+2 x (1+x² ) y₁=2 ) Since ( y₂= d² y d x² )