$\displaystyle \left(-\infty, \frac{1}{2} \right)$\displaystyle \left(-\infty, \frac{1}{2} \right)

$\displaystyle \left(-\infty, \frac{1}{14} \right)$\displaystyle \left(-\infty, \frac{1}{14} \right)

$\displaystyle \left( \frac{1}{14},+\infty \right)$\displaystyle \left( \frac{1}{14},+\infty \right)

$\displaystyle \left( \frac{1}{2},+\infty \right)$\displaystyle \left( \frac{1}{2},+\infty \right)