section 2.4 martingales

[@user-or7ji5hv8y]

Did you include the gains from the derivatives in the last equation. It seems you only subtracted from the wealth.

[@moneyeye24]

good. try to talk stochastic calculus

[@kdpr007]

Thank you. I was wondering what is the difference in calculation methods for Expected Value, Conditional Expectation and Martingale. For me, I know there is a subtle difference. But the steps/approach calculations seem to be the same for all the three calculations. will you please help me in identifying the subtle difference between the three/or how these three are different from each other? Kindly help are you ok to share your email id, I will send my workings.