1. Begin with .

2. Differentiate both sides of the equation, getting D() = D()

3. D() + D() = D()+D(1)

4. Remember to use the chain rule on

5. D(y) = D() + 0

6. Use the product rule on  

7. y΄ = D(2x²)y² + 2x²D(y²)

8. y΄ = 4xy² + 2x²2y y΄

9. y΄ = 4x +  4x²yy΄

10. y΄ - 4x²yy΄ = 4x -

11. y΄( - 4x²y) = 4x –

12. y΄ =