4^log(4)[x^2]+3^log(9)[6x]=log(2)[16] 第2第3项 怎么处理的?
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4^log(4)[x^2]+3^log(9)[6x]=log(2)[16]第2第3项怎么处理的?4^log(4)[x^2]+3^log(9)[6x]=log(2)[16]第2第3项怎么处理的?4^lo
4^log(4)[x^2]+3^log(9)[6x]=log(2)[16] 第2第3项 怎么处理的?
4^log(4)[x^2]+3^log(9)[6x]=log(2)[16]
第2第3项 怎么处理的?
4^log(4)[x^2]+3^log(9)[6x]=log(2)[16] 第2第3项 怎么处理的?
比如log(9)a=log(3)a/[log(3)9]=log(3)a/2=log(3)[a^1/2]换底公式
而log(2)[16]=log(2)[2^4]=4log(2)2=4
4^log(4)[x^2]+3^log(9)[6x]=log(2)[16] x
x²+3x=4x
x²=7x
x=7或x=0（舍去）
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(log(2)(x))^3-4(log(4)(x))^2+log(16)(x)=0
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log(2)9×log(3)4
若log底数2[log底数3(log底数4)]若log底数2[log底数3(log底数4（x）)]=log底数3[log底数4(log底数2(y))]=log底数4[log底数2(log底数3z)]=0,则x+y+z=
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