On September 29, 2008 a stock market crash took place. The trend of the stock price (scaled from the base value) from the day before to the day after the market crashed can be described as f(t) = 3 - At2, where A is a positive constant and t (measured in hrs) represents the time from market-crash. a) During what time intervals was the stock price increasing?

b) Find the coordinates, (time, stock-price), of all maximum and minimum stock prices. c) On what time interval(s) is the graph of stock price concave up and concave down? Interpret these intervals in the context of stock price? d) What do you mean by the inflection point in the context of stock price? Find any inflection points. Explain your justification? e) Choose a vilue for A and sketch the graph of the stock price on the oxis pronided on the right. Task 3: Explain the learning outcomes from t