诺基亚衰落的原因知乎:还是极限的问题~~高手请进~~~
来源:百度文库 编辑:中科新闻网 时间:2024/05/15 20:04:25
[(1+x)^5-1]/sin2x
x趋向于0
x趋向于0
(1 + x)^5 - 1
= x^5 + 5*x^4 + 10*x^3 + 10*x^2 + 5*x
[(1 + x)^5 - 1]/sin(2x)
= (x^5 + 5*x^4 + 10*x^3 + 10*x^2)/sin(2x) + 5x/sin(2x)
--> 5/2
x/sinx --> 1