Bisection method

The bisection method is a way of finding the solution to a problem. It works like this: first, imagine you have a really really long rope that you need to cut in half. You could cut it in half once, then take one of those pieces and cut it in half again. You would keep doing that until you had a piece of rope that was exactly in the middle. The bisection method is like this, except instead of a rope you have a problem you need to solve. You start by guessing something that might be the answer, then you keep narrowing down your guess until you find something that is exactly in the middle. That guess will be the solution.