Techniques of Integration, Part Two
In this chapter, we’ll finish gathering our techniques of integration by taking an extensive look at integrals involving trig functions. Sometimes one has to use trig identities to solve these types of problems; on other occasions there are no trig functions present, so you have to introduce some by making a trig substitution. After we finish all this trigonometry, there’ll be a quick wrap-up of the techniques from this and the previous chapter so that you can keep it all together. So, this is what we’ll look at in this chapter:
• integrals involving trig identities;
• integrals involving powers of trig functions, and reduction formulas;
• integrals involving trig substitutions; ...