以下方程式該如拆解? - 土木
By Enid
at 2011-08-07T14:05
at 2011-08-07T14:05
Table of Contents
版上前輩們您好!
請問以下方程式該如何拆解呢?
160 小於等於 (σx + 40)/2 + { [(σx - 40)/2]^(2) + 30^(2) }^(1/2)
請求出 σx 為多少?
麻煩不吝嗇告知,謝謝!
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