Difficulty groups
They are grouped into 3 levels of difficulty:
1) Beginner - Here are integrals that require the ability to apply the most basic methods, such as:
- substituting a variable,
- integrating by parts,
- constructing a recurrence formula;
2) Advanced - Integrals of this group require knowledge of a second course in mathematical analysis.
Here you will need to:
- be able to use differentiation over a parameter,
- integrate under the sign of the integral,
- know some things about series and a few special functions;
3) Master - Here are brutal integrals that require a deeper knowledge of special functions, calculus,
and even complex analysis. In addition, very specialized formulas may be required.