Illustration of Implied Volatility
Draw the function curve of the Black-Scholes (or Black-Scholes-Merton) formula for the value of a put option less the security price, as a function of the volatility, for a given time to expiration also using a slider for the security price as a second variable. The purpose is to illustrate using the Black-Scholes formula to find implied volatility. For a complete explanation with examples, theory, and problems to work see
http://www.math.unl.edu/~sdunbar1/MathematicalFinance/Lessons/BlackScholes/ImpliedVolatility/impliedvolatility.html