用洛必达法则求下列极限 lim x→+∞ π-2arctanx⼀ln(1+1⼀x)

2025-02-27 15:06:22
推荐回答(1个)
回答1:

=lim(-2/(1+x²))/((-1/x²)/(1+1/x))
=lim2(x²+x)/(1+x²)
=lim2(1+1/x)/(1/x²+1)
=2