$\left[\begin{array}{cccc}1& \frac{1}{2}& \frac{1}{3}& \frac{1}{4}\end{array}\right],\left[\begin{array}{cccc}\frac{1}{2}& \frac{1}{3}& \frac{1}{4}& \frac{1}{5}\end{array}\right],\left[\begin{array}{cccc}\frac{1}{3}& \frac{1}{4}& \frac{1}{5}& \frac{1}{6}\end{array}\right],$

$\left[\begin{array}{cccc}\frac{1}{4}& \frac{1}{5}& \frac{1}{6}& \frac{1}{7}\end{array}\right]$ are they lineary independent