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\begin{aligned} &\int x^{\mathrm{n}} \mathrm{dx}=\frac{x^{\mathrm{n}+1}}{\mathrm{n}+1}+\mathrm{C} \quad \text { if } \mathrm{n} \neq-1 \\ &\int x^{-1} \mathrm{dx}=\int \frac{1}{x} \mathrm{~d} \mathrm{x}=\ln |x|+\mathrm{C} \end{aligned}