this is stranger than I thought at first:
(1) -> limit(sin(x)+erf(x+sqrt(-1)/2) + erf(x-sqrt(-1)/2), x=0)
(1) 0
Type:
Union(OrderedCompletion(Expression(Integer)),...)
so, apparently, the limit exists unconditionally, but adding the direction
makes FriCAS believe it doesn't!
Puzzled,
Martin
Am Dienstag, 5. Februar 2019 22:04:04 UTC+1 schrieb Martin R:
>
> This arises in the computation of an integral:
>
> (51) -> limit(sin(x)+erf(x+sqrt(-1)/2) + erf(x-sqrt(-1)/2), x=0, "right")
>
> (51) "failed"
>
> (52) -> limit(erf(x+sqrt(-1)/2) + erf(x-sqrt(-1)/2), x=0, "right")
>
> (52) 0
>
> Martin
>
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