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moden math请问这题怎么做？
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发表于 20-2-2016 09:23 PM
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本帖最后由 tat90 于 20-2-2016 09:36 PM 编辑
First draw line 2x+4y=0. Two point (2,-1) (4,-2) join the two point . Label 2x+4y=0 |
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发表于 20-2-2016 09:39 PM
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Then substitute any value of x into the equations to find which side is more or less . Very easy questions |
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发表于 20-2-2016 09:52 PM
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