We started on integration. Went through Skill #1.1-1.3. Integration in the form of $\int\frac{f^{'}\left(x\right)}{f\left(x\right)}dx$, $\int\ f^{'}\left(x\right){\left[f\left(x\right)\right]}^ndx\$ and integration of exponential functions in the for of $\int\ a^{f(x)}dx\$ and $\int\ e^{f(x)}dx$.