Algunas preguntas sobre MATLAB

(1)

>> a=sym('811');

>> sims x

>> f= int(exp(a)*x^2,0,1/2);

>> f=vpa(f)

f =

6.8016390624741510330527758843973 *10^350

(2)

>> sims x

>> f=exp(sin(1/x));

>> df=diff(f,x,3);

>> a=sym('811');

>> df1=subs(df,x ,a);

>> df1=vpa(df1,17)

df1 =

-0.000000000013903928407426753