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tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Sep 15, 2009 #2 Re: Quantitative reasoning exercise- NEED HELP! Have you considered... ∣1x−1y∣ = ∣y−xxy∣\displaystyle \left| \frac{1}{x}-\frac{1}{y} \right| \;=\; \left| \frac{y - x}{xy} \right|∣∣∣∣∣x1−y1∣∣∣∣∣=∣∣∣∣∣xyy−x∣∣∣∣∣ And, if x > 0 and y > 0, we have... ∣y−x∣xy\displaystyle \frac{ \left| y - x \right|}{xy}xy∣y−x∣ Now what?
Re: Quantitative reasoning exercise- NEED HELP! Have you considered... ∣1x−1y∣ = ∣y−xxy∣\displaystyle \left| \frac{1}{x}-\frac{1}{y} \right| \;=\; \left| \frac{y - x}{xy} \right|∣∣∣∣∣x1−y1∣∣∣∣∣=∣∣∣∣∣xyy−x∣∣∣∣∣ And, if x > 0 and y > 0, we have... ∣y−x∣xy\displaystyle \frac{ \left| y - x \right|}{xy}xy∣y−x∣ Now what?
