syms x >> int(OHF(x,0,0,0),x,0,2) getting error msg " Undefined function 'OHF' for input arguments of type 'sym'".

function[OHF]=OHF(x,b,mu,eta)
syms x
OHF=x^(mu-1)*(x+b+sqrt(x^(2)+2*b*x))^(-eta);
end

Answer 1

[KSSV]

x = OHF(rand,rand,rand)
function out =OHF(b,mu,eta)
syms x
out=x^(mu-1)*(x+b+sqrt(x^(2)+2*b*x))^(-eta);
end

OR

x = OHF(rand,rand,rand,rand)
function out = OHF(x,b,mu,eta)    
    out=x^(mu-1)*(x+b+sqrt(x^(2)+2*b*x))^(-eta);
end