Question: (Differentials of twice differentiable functions).
(i) Setting P(x) = xn, show that eq. (3.65) can be written as
![1602_Stratonovich.png](https://secure.tutorsglobe.com/CMSImages/1602_Stratonovich.png)
(ii) Obtain the latter for every polynomial![8_Stratonovich 1.png](https://secure.tutorsglobe.com/CMSImages/8_Stratonovich 1.png)
(iii) Use polynomial approximations to prove the same for any twice continuously differentiable function P(x).
(iv) Derive the analogous expressions for Stratonovich and backward differentiation.