[考古] 高大97考古題幫解 非常急
1. Find δ^2f/δxy if f(x,y)＝3x^3 - xy^2 + x^2y + 5Y^3.
2. Find the area of the region bounded by the curves.
x = 4 - y^2 , x - y = -2
3.Find the volume of the solid with cross-sectional area
A(x)=π(8-x)^2 , 0≦x≦8.
4.Solve the initial value problem.
y'=x / cosy , y(0) = 0
請各位高手幫我解題一下
感激不盡
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