[中學] 多項式求最小值(算幾不等式失敗?)
這題怎麼拚都拚不出來
用畫圖軟體可以算出 當x=1時 會有最小值4 (x>0的範圍)
但是式子拚不出來,想用算幾好像不太可行…
還請教高手們幫幫忙!!
https://upload.cc/i/5FO9es.png
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09/29 11:46, , 1F
09/29 11:46, 1F
推
09/29 14:40, , 2F
09/29 14:40, 2F
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09/29 14:41, , 3F
09/29 14:41, 3F
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09/29 14:56, , 4F
09/29 14:56, 4F
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09/29 14:56, , 5F
09/29 14:56, 5F
推
09/29 17:37, , 6F
09/29 17:37, 6F