MathGroup Archive 2001

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	Concerning the recent question about PowerExpand of (-1/t)^(3/2)
Sqrt[-t]  note that the results depend on how you enter the formula....

	PowerExpand[Sqrt[(-1/t)^3] Sqrt[-t]]   gives the result   -1/t


	PowerExpand[Sqrt[-1/t]^3 Sqrt[-t]   gives the result   1/t

	apparently   typing in (-1/t)^(3/2) Sqrt[-t]  in Mathematica
corresponds to the second way...

	jerry blimbaum   NSWC Panama City, Fl

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