kill(all);

van=facebook.com/LearningCalculus$

newton(t):=float(subst(t,a,a-f(a)/diff(f(a),a)))$

f(a):=sqrt(10*sqrt(3)*sqrt(a-5)*sqrt(a+5)+3*a^2-50)-8$

a:newton(newton(5.291502622129181));

A_equil(a):=sqrt(3)/4*a^2;

A_equil(a);

2*%;