高数求大神解,第十题

2025-05-10 19:25:00
推荐回答(1个)
回答1:

=e^limxln((2/π)arctanx)
=e^lim((2/π)arctanx-1)/(1/x)
=e^lim((2/π)/(x²+1)/(-1/x²)
=e^(-2/π)