[中學] 絕對值
Define |a|= the square root of a^2.
如何用上面這個定義來解
|x+2|
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x+2
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01/31 16:57, , 1F
01/31 16:57, 1F
推
01/31 17:02, , 2F
01/31 17:02, 2F
推
01/31 17:02, , 3F
01/31 17:02, 3F
→
01/31 17:03, , 4F
01/31 17:03, 4F
→
01/31 17:03, , 5F
01/31 17:03, 5F
推
01/31 18:29, , 6F
01/31 18:29, 6F
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