Assume that W_t is a Brownian motion under probability measure P. Apply Itos formula to expand the two expressions.

(1) (10 points) Wt3Wt2 (2) (10 points) St=exp(aWt+bt) (a, b are constants), use Ito's formula to expand (1) (10 points) Wt3Wt2 (2) (10 points) St=exp(aWt+bt) (a, b are constants), use Ito's formula to expand