GUIA 10 PNG 2018-1

TAREA10
--------------------------------------------------------------------------------------
EJERCICIO 1)
%%%%%%%%%% ARCHIVO 'f.m' %%%%%%%%%%%%%%%
function xdot = f (x,t)
xdot=-exp(-t)*x^2;
endfunction
%%%%%%%%%% CONSOLA OCTAVE %%%%%%%%%%%%%%
> x=lsode("f",2,(t=linspace(0,5,50)'));
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

a) RECONSTRUIR LA ECUACION:

x'(t) = -e(-t)*x^2(t) ; x(0) = 2

b) GRAFICAMOS EN EL INTERVALO (0,5)

<< https://imgur.com/a/kC4C6RW >>

--------------------------------------------------------------------------------------
EJERCICIO 2)

%%%%%%%%%% CONSOLA MATLAB %%%%%%%%%%%%%%
>> f=inline('x*y^2+y');
>> [x,y] = ode45(f,[0 0.5],1);
>> plot(x,y)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

GRAFICO:

<< https://imgur.com/a/qajQv93 >>
--------------------------------------------------------------------------------------
EJERCICIO 3)