Question Number 53351 by ajfour last updated on 20/Jan/19
Commented by ajfour last updated on 21/Jan/19
$${If}\:\:\rho\:\propto\left(\mathrm{1}+\frac{{x}}{{l}}\right)\:,\:{find}\:\alpha\:{and}\:\beta. \\ $$$$\left({sorry}\:{for}\:{fault}\:{in}\:{diagram}\right).\:\:\:\:\:\:\:\:\:\:\: \\ $$