Tham KY's answer to Ethan Ow Yong's Secondary 4 A Maths question.
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Date Posted:
7 years ago
Thanks
Why we don't include the 1/3?
The pair of inequality (I put in red) has only range x<=0, did not overlap the range of the other pair (in green). If 1/3 is included, the value cannot fit into the red inequality.
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