[考古] 94元智資訊工程
有兩道題要麻煩大家
第一題 Find limit
2sin x - sin (2x)
lim ---------------------
x->∞ 2e^x - 2 - 2x - x^2
第三題 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?
麻煩可以的話, 我需要詳解, 不然真的不會算阿, 謝謝
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