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如果只寫 2X=3Y,不問問題的話,你會怎麼回答(看待)
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數學領域-國中
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數學領域輔導員-溪南國中-張廷吉
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May 21, 2016, 11:15:09 AM
5/21/16
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to 臺中市國民教育輔導團公開討論區
歡迎大家來討論
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數學領域輔導員-溪南國中-張廷吉
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May 21, 2016, 11:18:30 AM
5/21/16
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從方程式來看
2X=3Y 可以列出很多組解
從倍數(比)來看 X是Y的1.5倍(剛好上面的姊也會有這樣的情形)
所以
從解來看或是從比來看,在線性的情形下"一樣"
我是想看能不能弄懂
把2X=3Y和X:Y=3:2,各用表格列出,會有一組不同,X=0,Y=0,方程式有比例沒有!
X:Y=3:2是不該被寫成2X=3Y?!
數學領域輔導員-溪南國中-張廷吉於 2016年5月21日星期六 UTC+8下午11時15分09秒寫道:
歡迎大家來討論
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