Someone else do this. The farthest I got was log -0.117099663i(ix)=-x		
				
			
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			Screw it, X is X. Enough said. 
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			So the -xth root of just x is -0.0117099663. X=-0.0117099663^x. So log -0.0117099663(x)=x. 
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			So if -1=(8.53973423ix)^-x, -1^-x=8.53973423ix, because ei(pi)=8.53973423i. The -2xth root of 2ix is -0.0137123311 because the -xth root of ix is -0.0117099663i.