我的老电脑也不知道怎么了!放了几个月放坏了
ln[u+√(1+u^2) ] = lnx +lnC
=ln(Cx)
u+√(1+u^2) =Cx (1)
1/[u+√(1+u^2)] =1/(Cx)
[√(1+u^2) -u] /[√(1+u^2) - u^2] =1/(Cx)
√(1+u^2) -u = 1/(Cx) (2)
(1)-(2)
2u = Cx -1/(Cx)
u=(1/2)[Cx -1/(Cx)]