Recitation 22

Exercise:

1. \int\frac{dx}{x^2+4x+13}
2. \int\frac{\cos(x)}{\sin^2(x)+2\sin(x)+2}dx
3. \int\frac{dx}{\sqrt{4-x^2}}
4. \int\frac{dx}{x\ln(x)\sqrt{\ln^2(x)-4}}
5. \int\frac{e^x}{\sqrt{9-e^{2x}}}dx
6. \int\frac{e^x}{e^{2x}+2e^x+2}dx