MATLAB: Question sur le problème de la valeur initiale – correction d’erreur

Question
Je crée un script
 
function f = exercise711 (t, x)
f = t * x.^2;
end
 
Et sur la fenêtre de commande, j’ai écrit
 

>> [t1, x1] = ode45(@exercise711, [0 1], 1);
>> plot(t1, x1)
>> hold on
>> [t2, x2] = ode45(@exercise711, [0 2], 1);
Warning: Failure at t=1.414192e+00. Unable to meet integration tolerances
without reducing the step size below the smallest value allowed
(3.552714e-15) at time t.
In ode45 (line 308)
>> plot(t2, x2)