clear all y = .6666 - (4*(((10*(pi^2)*(r^3)/((d^2)*g*m*epsilon)) - 1)^(1/2))/15) simplify simplify symbolic r repeat simplify y repeat simplify symbolic
clear all y = .6666 - (4*(((10*(pi^2)*(r^3)/((d^2)*g*m*epsilon)) - 1)^(1/2))/15) simplify simplify symbolic r repeat simplify y repeat simplify symbolic