ln2等于多少?怎么算呢?

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=0.6931
======以下答案可供参考======
供参考答案1:
=6^m×3^4m÷6^(3m-2)
=6^[m+4m-(3m-2)]
=6^(2m+2)
y=f(x)=(e^x+1)/(e^x-1)
y-1=(e^x+1)/(e^x-1)-1=2/(e^x-1)
e^x-1=2/(y-1)
e^x=2/(y-1)+1=(y+1)/(y-1)
反函数则e^y=(x+1)/(x-1)
所以是y=ln[(x+1)/(x-1)]，(x1
供参考答案2:
用计算器