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Question: Is this a bug? Error, (in simpl/min) non-real argument to max/min

Question:Is this a bug? Error, (in simpl/min) non-real argument to max/min

nm 11978 Maple 2025
asympt multiseries
5 hours ago
1

Would this be considered a bug or expected?

Everytime I see internal error in red, for me, it tells me it is a bug. But wanted to check first what others think.

> 

restart;
> 

interface(version);

`Standard Worksheet Interface, Maple 2025.2, Windows 10, November 11 2025 Build ID 1971053`

> 

ode:=x^2*diff(y(x), x$2) + (cos(x)-1)*diff(y(x), x) + exp(x)*y(x) = 0;
sol:=dsolve(ode,y(x),type='series',x=0):
sol1:=eval(%, _C2=0):
sol2:=eval(%%, _C1=0):

x^2*(diff(diff(y(x), x), x))+(cos(x)-1)*(diff(y(x), x))+exp(x)*y(x) = 0

> 

Y:= unapply(rhs(sol1), x):
eval(lhs(ode), y=Y):
MultiSeries:-asympt(%, x);

Error, (in simpl/min) non-real argument to max/min: -13/2+1/2*I*3^(1/2)

> 

Y:= unapply(rhs(sol2), x):
eval(lhs(ode), y=Y):
MultiSeries:-asympt(%, x);

Error, (in simpl/min) non-real argument to max/min: -13/2-1/2*I*3^(1/2)

 

 

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