How to solve an Integral in Java?

Question

Hello!

I need to develop a program in Java to solve some integrals. Integrals like this:

I've looked for some functions to do this, in java.Math but I didn't find anything.

Has anyone an idea to get a solution for this? (maybe some extra libraries or something like that)

Thanks a lot!!

Answer 1

Check this out: http://en.wikipedia.org/wiki/Numerical_integration#Methods_for_one-dimensional_integrals

You should have no problem implementing the "trapezoidal" or "rectangle" rule.

Answer 2

Check out Simpson's Rule on Wikipedia.

Answer 3

Take a look at JScience

Answer 4

The Apache Commons Math library contains, in the Numerical Analysis section, four different numerical integrators:

• Romberg's method
• Simpson's method
• trapezoid method
• Legendre-Gauss method