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problem with integral


Hi!:

In version 3.0 (Linux and Windows) this integral isn't solved

Integrate[Exp[-(Log[x/a]^2/(2*b))], x]

if I do the same integral in http://www.integrals.com, is solved! (??)

In Linux and Windows, if I write in the next, more complicated form

Integrate[(a*Exp[b/2 - (b - Log[x/a])^2/(2*b)])/x, x]

is solved!

(???)

Enrique Zeleny
Instituto de Fisica
Puebla, Mexico




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