高中知识无法解决,这是大学内容
lim(n->无穷)(1+1/2n)^n
=lim(n->无穷)(1+1/2n)^[(2n)*(1/2)]
=lim(2n->无穷)(1+1/2n)^[(2n)*(1/2)]
=e^(1/2)