> 数学 >
求limx→∞[x(π/2-arctanx)
人气:218 ℃ 时间:2020-06-15 18:41:38
解答
lim[x(π/2-arctanx)]
=lim[(π/2-arctanx)/(1/x)]
=lim[-1/(1+x^2)/(-1/x^2)]
=lim[x^2/(1+x^2)]
=1
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版