How to find x with romberg's method ?

how can i find the x with matlab and ramberg method when the integral is equal to 3 ...

[bym]

Do you mean Romberg's method? http://en.wikipedia.org/wiki/Romberg's_method

[Jan]

And as for all homework questions: What have you tried so far and which problems occurred?

[Walter Roberson]

Stephen indicates that the Romberg method is desired, and that he wants the answer in MATLAB.