The de Broglie wavelength

$\lambda \propto \frac{1}{\left(v-v_{0}\right)^{\frac{3}{2}}}$

$\lambda \propto \frac{1}{\left(\mathrm{v}-\mathrm{v}_{0}\right)^{\frac{1}{2}}}$

$\lambda \propto \frac{1}{\left(v-v_{0}\right)^{\frac{1}{4}}}$

$\lambda \propto \frac{1}{\left(v-v_{0}\right)}$