Solve the differential equation

(x+2x)^3dx+(y+2y)^3dy=0

Answer 1

[Ameer Hamza]

Use ode45(). Try following code

xspan = [0 1];
ic = 1; % initial condition

[t, y_sol] = ode45(@odeFun, xspan, ic);
plot(t, y_sol);
legend({'y'});

function dydx = odeFun(x, y)
    dydx = -(x/y).^3;
end

Answer 2

[KSSV]

syms x y(x)
ode = diff(y,x)+(x+2*x)^3/(y+2*y)^3==0 ;
sol = dsolve(ode) ;
celldisp(sol)