請問此1、2式是如何處理而得1+2入X 和 2入Y? 此圖擷取自http://episte.math.ntu.edu.tw/entries/en_lagrange_mul/
_________________ Atra esternī ono thelduin Mor'ranr līfa unin hjarta onr Un du evarīnya ono varda. May good fortune rule over you Peace live in your heart And the stars watch over you.
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