Solve the differential equation

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yo yo
yo yo 2020-6-18
回答： KSSV 2020-6-18
(x+2x)^3dx+(y+2y)^3dy=0

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回答（2 个）

Ameer Hamza
Ameer Hamza 2020-6-18
编辑：Ameer Hamza 2020-6-18
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
KSSV
KSSV 2020-6-18
syms x y(x)
ode = diff(y,x)+(x+2*x)^3/(y+2*y)^3==0 ;
sol = dsolve(ode) ;
celldisp(sol)

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