Status: Valid
Owner: ----
CC: [email protected]
Labels: Type-Defect Priority-Medium Integration
New issue 3503 by [email protected]: Special values for Si are not
implemented
http://code.google.com/p/sympy/issues/detail?id=3503
In [44]: integrate(sin(x)/x, (x, 0, t))
Out[44]: Si(t)
In [45]: integrate(sin(x)/x, (x, 0, oo))
Out[45]:
π
─
2
In [46]: Si(oo)
Out[46]: Si(∞)
In [47]: limit(Si(x), x, oo)
Out[47]: Si(∞)
Probably there are several other cases that aren't implemented yet either.
Would it be reasonable to create some kind of table of "likely" values to
have closed form solutions for these special functions defined by
integrals, and use integrate() to compute them (possibly with caching)?
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