作者apruth (L's celebrate！)
看板trans_math
标题Re: [考古] 师大99 企管 最後一题
时间Fri Jul 8 11:17:52 2011
※ 引述《Horatioa (康猴)》之铭言：
: 拜托帮忙一下 师大99企管最後一题
: The weekly cost to produce x widgets is given by C(x) =
: 75000+100x-0.03*X^2+0.000004*X^3 0<= x <= 10000 and the demand function for
: the widgets is given by P(x)=200-0.005x , o<= X <= 10000 Assume that the
: company sells exactly what they produce
: (a) what are the marginal cost . marginal revenue and marginal profit when
: 2500 widgets are sold ??
你有在读书吗？这是基本的定义
MC(x)=C'(x), MC(2500)=Ans
MR(x)=R'(x), R(x)= x*P(x), MR(2500)=Ans
MP(x)=P'(x), P(x)= R(x)-C(x), MP(2500)=Ans
: (b) what are the marginal cost marginal revenue and marginal profit when
: 7500 widgets are sold ??
同(a), 只是代入的数字不同而已
MC(7500)=Ans
MR(7500)=Ans
MP(7500)=Ans
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