Hi, could someone please explain to me the reasoning behind the following rule. $\displaystyle If \;a\geq 0,\;\lvert x-k\rvert\leq a\;is\;equivalent\;to\;k-a\leq x\leq k+a$ I'm only just starting to learn absolute values. Thanks
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Originally Posted by Stroodle Hi, could someone please explain to me the reasoning behind the following rule. $\displaystyle If \;a\geq 0,\;\lvert x-k\rvert\leq a\;is\;equivalent\;to\;k-a\leq x\leq k+a$ For an illustrated explanation, try here.
Awesome. That's was really simple to understand. Just what I needed
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