What is the value of (2 ⁻¹(0.8) . ?

Step-by-step solution

We know that aligned & 2 ⁻¹ x= ⁻¹ x (2 x^2-1 ) & here x=0.8 & aligned 2 ⁻¹(0.8) & = ⁻¹ (2(0.8)^2-1 ) & = ⁻¹(0.28) aligned aligned Now, ( ⁻¹(x) )=x . ( ⁻¹(0.28) )=0.28