Question 230700
find all x in R for which :
1) absolute value of (x-1)<1/2
-1/2 < x-1 < 1/2
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Add 1 along the line to get:
1/2 < x < 3/2
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2) absolute value of (x^2-1)<1/2
-1/2 < x^2-1 < 1/2
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Add 1 along the line to get:
1/2 < x^2 < 3/2
Take the square root along the line:
[sqrt(2)/2 < x < sqrt(6)/2
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Cheers,
Stan H.