If ⁻¹ ( 2 a 1+a^2 )+ ⁻¹ ( 2 b 1+b^2 )=2 ⁻¹ x , then x is equal to

Step-by-step solution

aligned & a 0, b 0 & 2 ⁻¹ a+2 ⁻¹ b=2 ⁻¹ x & 2 ⁻¹ ( a+b 1-a b )=2 ⁻¹ x aligned x= a+b 1-a b