when the price of a certain commodity is p dollars per unit , consumer demand
x hundred units of the commodity , where
75x^2 + 17p^2 = 5300
how fast is the demand x changing with respect to time when the price is $7
and is decreasing at the rate is 75 cents per month ?
這是政大企管去年轉學考第一題
看了很久不知道要怎下手
一來是看不懂他在問什麼...
謝謝幫忙>O<"
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