**Exercise:**

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

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# Recitation 22

by Zilin Jiang

**Exercise:**

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