Question

请问,lim X趋向无穷大时,求（2x-1/2x+1）的2x-1次方的极限

求求求，要过程谢谢 答案D要过程谢谢要过程谢谢

Answer 1

=lim(1 - 2/(2x + 1))^(2x + 1 - 2)
= lim(1 - 2/(2x + 1))^(2x + 1) / 1^2
= e^-2 / 1 = e^-2

Answer 2

=e^lim(2x-1)ln(1-2/(2x+1))
=e^lim(2x-1)(-2/(2x+1))
=e^(-2)