For each of the following integrals, you will use the techniques discussed in class to nd each. In fact, you will use each of the following ONLY ONCE: UrSubstitutiou, Integration by Parts (not tabular), Trigonometric Substitution, and Partial Fraction Decomposition. It is up to you to decide which technique to use on each problem. 1. 6dx 2. 1 Fleh J'Jchc2+1 3*+3+5'4 +3 _, 3. 1.de 4. Ie cos(2x)dx