作者hunterlin (Hunter)
看板Grad-ProbAsk
标题[商管] [微积分]-94年台大国企
时间Sun Jan 24 23:57:19 2010
二 the profit of buying a units of stock and b units of bond can be described
by a function W(a,b)=2^(1/2).exp{-b}.cos(a) (请原谅我不会用BBS打数学符号)
A profit-driven individual with a units of stock and b units of bond will
move in the direction of maximum profit increase.Find the equation b=f(a)
for the path of a profit seeking individual starting with a=pi/4 and b=0
请问这一题是什麽意思啊???
为了追求最大利润，求用a来表示的b??
是这样的意思吗???好像怪怪的
感谢!!
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