\(\displaystyle{ x \in \left\langle 0, \frac{a}{2}\( \right)}\)
\(\displaystyle{ F\left( x\right) \int_{0}^{x} \frac{4}{ a^{2}}z dz = \frac{2 x^{2} }{ a^{2} }}\)
\(\displaystyle{ F\left( \frac{a}{2} \right)= \frac{1}{2}}\)
\(\displaystyle{ x \in \left\langle \frac{a}{2} a\right\rangle}\)
\(\displaystyle{ F\left( x\right) = F\left( \frac{a}{2} \right) + \int_{0}^{x} \left( \frac{-4}{ a^{2} } z + \frac{4}{a} \right)dz = -1 + 4 \frac{x}{a}- \frac{2 x^{2} }{ a^{2} }}\)
Moje pytanie, skąd nagle tam wzięła się -1???