Why is it |x∣ ≤ 2 means x ≤ 2 and x ≥ −2 or −2 ≤ x ≤ 2
Either or, but the second one is the combined answer. It means this because of the absolute value bars. The absolute value turns what's inside positive, even if it's a negative value.
could you explain further?
It's kind of hard to go farther since that's all there is to it. You can plug in any negative number in for x and it will turn into the positive value of that number. However, the definition of absolute value is thge distance of the number to zero.
\(|x|\) is the distance to the origin if you want \(|x|\le 2\) then you want all the points that are within 2 units from the origin
is zarkon's answer not sufficient? |dw:1339119863980:dw|
|x| < 2 means that the numbers are less than 2 units from 0. Clearly, as Satellite and Zarkon have explained, those numbers have to be between -2 and 2
ok I get it now thanks :)
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