數學與統計
大學
已解決
請問這兩題 偏微分題目是要我求出什麼東西 不懂 ?
Tilasticity of Demand Suppose that the daily de-
滲
1Tmand for butter is given by
3g
史三 和2070) 三 1+22
where ? and g denote the prices per pound (in dor-
lars) of butter and margarine, respectively, ad 之 5
measured in millions of pounds. Compute 五 and 且
where三5and g三4. Interpret your Tesults.
(和 2 [88.2#61]
用
fch0 3
和ngine Eficiency The effieiency of and internal
combustion engine is given by
Where 4 ]
where IP and oare the Tespectlve imaxlrmum and Inmin-
lmum volumes of air in each cylinder.
R。 Show that O且/ODP > 0, and interpret your result.
47 b. Show'that 0五/9o < 0, and interpret your result.
4 [88.2##5引
7 8 gE 立 立~b
匕v《 /,Y) = 2 了= 01(Cl
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