Matematyka
$f(x) =$ | $x{\cdot}\cos\left(\dfrac{x}{2}\right)$ |
---|---|
$\displaystyle\int{f(x)}\, \mathrm{d}x =$ | $4{\cdot}\left(\dfrac{x{\cdot}\sin\left(\dfrac{x}{2}\right)}{2}+\cos\left(\dfrac{x}{2}\right)\right)+{C}^{\color{#a0a0a0}{\href{http://en.wikipedia.org/wiki/Constant_of_integration}{\mathrm{?}}}}$ |