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fsolve({(x^2+y^2)/(x+y)=10/3,1/x+1/y=3/4},{x,y})
x:=-0.85: y:=1.25: n:=-0.22: v:=0.01:
f:=((x+(abs(y))^(1/4))^(1/3))/sin(n);
g:=n+(v^3)/(n+(v^2)/(n+v^3));
EnvAllSolutions:=true:
solve(cos(3x)-sin(x)=3^(1/2)*(cos(x)-sin(3x)),x);
x:=3.981:
f:=