1003118804

Evaluate the integral $\underset{-3}{\overset{2}{\int }}f(x)\mathrm{d}x$, where $f(x)=x^{-4}$ for $x\in [-3;-\frac{1}{2}]$ and $f(x)=12.8-6.4x$ for $x\in [-\frac{1}{2};2]$. (rounded to $2$ decimal places)