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snipez90 · 11-17-2007, 03:45 PM

by cases, try x > 1, 0<x<1, -1<x<0, and x<-1 for each, these kinds of problems come up over and over, you don't have to pick specific numbers, just think in terms of magnitude and sign and that should point you in the right direction.

11-17-2007, 03:45 PM	#7
snipez90 Member Join Date: Apr 2006 Posts: 579	by cases, try x > 1, 0<x<1, -1<x<0, and x<-1 for each, these kinds of problems come up over and over, you don't have to pick specific numbers, just think in terms of magnitude and sign and that should point you in the right direction.
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