Question

differentiation of 2x²-1 ; 2cos-¹x​

Answer 1

Answer:

4x  ;  -2/√1-x²

Step-by-step explanation:

• 2x²-1

        4x- 0 = 4x

• 2cos⁻¹x

       cos⁻¹x = -1/√1-x²

      So,

         2cos⁻¹x = -2/√1-x²