Click on the calculator in the top right corner to input an equation and get an answer. Press the green flag. It will ask you for an equation or points. If you choose an equation, input a 1-variable equation into the text box. If you choose point, answer the questions after it appropriately. Now you can choose series or points. If you choose series, answer the questions appropriately and it will add together all the points in between and give you an answer. If you chose point, it will tell you the value of the point you request.
