quad, trapz, HELP

Dear fellows,

I have integral to solve. int(sqrt(f(x)-E),a,b).

So function is sqrt(f(x)-E). Integral can't be solved analiticaly, with syms x, etc. So it should be solved with trapz or quad....

But there is little challenge. a and b are not some constants, they are depend on E.

E is array: [.....] - 100 values for example. a = a(E), b = b(E), so a and b are also arrays (100 values).

How to solve this? How to bring in x?

Thank you very much in advanced.