lim (π/2-arctanx)/1/x x大于0

问题描述:

lim (π/2-arctanx)/1/x x大于0

-> x*(Pi/2-arctan(x))

lim(x→0) (x/2-arctanx)/(1/x)
=lim(x→0) (x/2-arctanx)*x
=(0/2-0)*0
=0