Question: equation value changes

Hi guys,

I have the following complex equation,

Az:=unapply((rhs(sol[2])*BesselJ(q,t2*r)+rhs(sol[3])*BesselY(q,t2*r))),r)

It gives a value which is constant for frequency upto 3000 Hz, i.e. if I run the solution again keeping all the values constant the result is the same  BUT   When I change the frequency to 15000 Hz, the equation still give me the result but every time its different when I run the program with constant values.

The output result of Az is  Az(r):= real + imaginary     i.e. complex form 

Is there any command which can cater for large values in case of complex numbers.   It seems the equation can't handle the large number i.e. 15000.

Looking forward to kind replies

Regards

A.Q

 

 

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