An investor purchases at 100-strike strangle which consists of a purchased 90-strike put and a purchased 110 strike call.
(a) Sketch a graph of the payoff diagram for this strangle and give the formula for these payoff values for each value x of the price at expiration.
(b) Sketch a graph of the profit diagram for this strangle and give the formula for these values for each value x of the price at expiration if the cost of the put $2.10, the cost of the call is $1.85, the expiration date is in one year, risk-free rate of interest is 4% compounded semiannually.
(c) Sketch a graph of the payoff diagram and give the formulas for these payoff values for the investment strategy which results from combining the above strangle with a written 100 strike straddle.