※ 引述《STARS74721 (....)》之铭言： : The area between two curves y = 1 - x and y = e^x from x= -1 to x=4 is?? 先画图 x 发现y轴左边 y=1-x > y = e 右边相反 而y轴上两个相等 ╭ 0 x ╭ 4 x A = │ (1-x) - e dx + │ e - (1-x) dx ╯-1 ╯ 0 : 再问一题有关表面积的.. 表面积? 不是求体积吗? : fond the volume under the surface f(x,y) = e^-y^2 and over the domain D find : which is hte region bounded by curves y = x ,x = 0 and y = 3 the : 这两题我翻了一下补习班的题目也没找到类题..解法也没思绪 : 希望各位能帮忙一下..感激不尽^^ 2 ╭3 ╭y -y V = │ │ e dxdy ╯0 ╯0 有错请指教... --

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