作者victor7935 (victor)
看板trans_math
标题[微分] 应用题
时间Sun Nov 30 22:14:51 2008
The base of an isoceles triangle is 6 feet.
Given that the altitude is 4 feet and increasing
at the rate of 2 inches per minute,at what rate is the
vetex angle changing ?
不大懂题目的意思...
帮忙一下罗! Thanks!
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