Question

ln(√2-1/√2+1)=ln√2+1嘛

Answer 1

因为
√2 - 1 = 1/(√2 + 1)
所以
ln(√2 - 1) / ln(√2 + 1)
= ln(1/(√2 + 1)) / ln(√2 + 1)
= - ln(√2 + 1) / ln(√2 + 1)
= -1
所以ln(√2-1/√2+1)不等于ln√2+1

Answer 2

因为:
√2 - 1 = 1/(√2 + 1)
所以
ln(√2 - 1) / ln(√2 + 1)
= ln(1/(√2 + 1)) / ln(√2 + 1)
= - ln(√2 + 1) / ln(√2 + 1)
= -1
所以:
ln(√2-1/√2+1)不等于ln√2+1

Answer 3

计算公式=ln(√2-√2+1)
=ln√2+1
=ln(2)-1/2+1*ln(2)+1
=1.8862943611

Answer 4

ln(√2-1/√2+1)≠ln√2+1
ln(√2-1/√2+1)=ln（3-2√2）

Answer 5

ln(√2-1/√2+1)=ln√2+1