Hi,
Thanks for your reply.
literally i don't know how to handle the built-ins exponent function.I can able to find only  Math::BigInt package. However I can't able to overright the object , instead of creating new objects every time in that module.This makes me very bad situation if my length of string id very high.
. I have tested my code with in-built function and it is working fine.
-kulls

In reply to Re^2: Equation - code review by kulls
in thread Equation - code review by kulls

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