Question 752830
{f-log)? {f-g)? (f-10*g)??
 
Se {{{system((f-g)(x) = 2x^2 + x - 6,f(x) = x/2 + 3)}}} --> {{{system(f(x)-g(x) = 2x^2 + x - 6,f(x) = x/2 + 3)}}} --> {{{x/2 + 3-g(x) = 2x^2 + x - 6}}} --> {{{-g(x) = 2x^2 + x - 6-x/2-3}}} --> {{{-g(x) = 2x^2 + x/2 - 9}}}   --> {{{g(x) = -2x^2 - x/2 +9}}}