NAN when we integrate

Hi

I have this code

b=1;mu=1;

f = @(t) (t.^(2*mu)).*exp(-t.^2).*besseli(mu-0.5,a.*t.^2)

Q = integral(f,b,Inf)

but give me Q=NAN ??

Answer 1

[Youssef Khmou]

hi, i think NaN can be logical answer, plus a is not provided ,

 try :

figure, plot(f(-100:0.1:300))

is the area between f and the ax axis defined ?

[mutah]

it's ploted 2 lines

[Youssef Khmou]

i tried with a numeric vector, and the returned function contains NaN, so the problem happened before the integration,

 r=f(-100:100);
 isnan(r);