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Saw this expression:

[tex]^{inf}_{-inf} \int e^{x^{2}} = 2 \times ^{inf}_{+0} \int e^{x^{2}}[/tex]

I am unable to understand this change of base. You can change from -inf to 0 and 0 to +inf but do not see how that equals to 2 * the integral from 0 to infinity.

I hope someone will help me see the light :)

Thanks,

Luc

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# Help with a definite integral property

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