The on-line tools included here include the root finder, the curve fitter, the integrator and the differentiator.

To use these tools, you just answer the questions as they appear, plugging in your data. These tools will quickly find the correct answers. They can be very helpful if you want to check your own work to see if you are on the right track.

One rule to remember is if you are putting in a term with an exponent, such as x² or x³, you have to type that in as x**2 or x**3.

Also, to ensure the correct evaluation of your function, brackets should be used.

Here's an example: the function x^2x-5 would be written as x**(2*x)-5.

Also, if you want to check a new function, just press the re-start button.

Everything else should be obvious once you have gone through the tutorials for these numerical techniques.