warning: an infinite or non numeric value was encountered.

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Tony little
Tony little 2020-8-14
编辑： Tony little 2020-8-14
Hello, i want to get an answer of a function which includes three integrals.
The function is formulated as
where the Beta function is
.
The codes are
function f_integral(Noise,Path_loss_fac,Thre_Pr,s)
syms v u t
Thre_SINR = exp(t)-1;
f1 = 1/(1+v^(Path_loss_fac/2));
function_beta = 1 + Thre_SINR^(2/Path_loss_fac)*int(f1,v,Thre_SINR^(2/Path_loss_fac),inf);
f2 = s*exp(-s*u*function_beta)*exp(-Thre_SINR*Noise*u^(2/Path_loss_fac));
f3 = matlabFunction(f2);
judge_temp = integral2(f3,0,inf,0,inf);
end
I calculate the inner Beta function with int() method and the outer integral with integral2() method respectively.
When the code runs, Matlab replies 'warning: an infinite or non numeric value was encountered'.
I want to know how to get this integral. Thanks a lot!! : )
PS: It is notable that the answer exists when changing the integral2(f3,0,inf,0,inf) to integral2(f3,0,700,0,inf).

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