作者pepaduck (@@)
看板trans_math
标题[考古] 94元智资讯工程
时间Tue Jun 6 00:28:10 2006
有两道题要麻烦大家
第一题 Find limit
2sin x - sin (2x)
lim ---------------------
x->∞ 2e^x - 2 - 2x - x^2
第三题 Applications of differentiation
(b) An object is hurled upward from the roof of a building 10m high.
It rises and then falls back; its height above ground t s after it is
thrown is y = -4.9 t^2 + 8t +10m, until it strikes the ground. What is
the greatest height above the ground that the object attains?
With what speed does the object strike the ground?
麻烦可以的话, 我需要详解, 不然真的不会算阿, 谢谢
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