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问题: 3^x=2^x+1的解法

3^x=2^x+1的解法,求X
要有步骤,不能凑答案!

解答:

3^x=2^(x+1)=2*2^x

(3/2)^x =1/2
x =log(3/2)(1/2) = -lg2/(lg3 -lg2)