问题已解决
1.75=1.6×2.5/(2.5+1+1.5)+2.5×1/(2.5+1+1.5)+β×1.5/(2.5+1+1.5) 解得:β=1.5,老師,這個(gè)解方程的步驟是怎么樣的?
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您好!很高興為您解答,請(qǐng)稍等
2024 05/25 10:37
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廖君老師 ![](/wenda/_nuxt/img/reply2.28c7604.png)
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2024 05/25 10:43
您好,移項(xiàng)β×1.5/(2.5%2b1%2b1.5)=1.75-(1.6×2.5/(2.5%2b1%2b1.5)%2b2.5×1/(2.5%2b1%2b1.5)),再把β的系數(shù)除過來 β=(1.75-(1.6*2.5/(2.5%2b1%2b1.5)%2b2.5*1/(2.5%2b1%2b1.5)))/(1.5/(2.5%2b1%2b1.5))=1.5
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