Compare was made by wnc@datatamers.com to help the user to check to see if their equations for the derivative or the anti-derivative is correct. The menu gives you 3 choices, deriv, anti-deriv, and getC. Choose deriv to check to see if your equation for the derivative is correct. It will ask you for the original equation, and then your guess to it's derivative. Then you supply it a variable to use, and it will output two numbers. if those two numbers are close to each other, your guess is right. The same goes for the anti-derivative. Get C is used to figure out what the C value is for anti-derivatives. (e.g f(x)= x^2 when x=2 and y = 5 C = 1 since 2^2 + C = 5 C = 1