finding Df and variation and calculing limite but ...


i find a program in hp website
it find the domain of definition and tracing (graph) the table of variation and calculating the limites (lim x-->) but it does some error
lik this
try to enter this function
he give the Df like this
and iths inccorect the correct DF is
and some times he can't find the Df if the function is large or contenaing EXPONENTIAL OR LOGHARIME
and now if there's any one can devellope this programe o give me another do all this funtions(limite.variation table.derivative.DF) .
tnx for all
and sorry for my english becaus ispeak just french or arabic
and this is the link for the prgrame

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