作者scoro (史库尔)
看板trans_math
标题[考古] 94政大资管1跟2
时间Thu Jun 29 00:03:41 2006
噗...我又来了= =""
1.(a) Show that the point (2,3,1) lies on the surface
x^2 y^2
--- + --- - z^2 = 1
4 9
(b)Find the equation of the tangent plane to the above surface at this point.
(c)Calculate the distance of this plane from the origin.
a小题是否是要求要画图证明点(2,3,1)是在这个平面上@@?
b小题是要微分求斜率吧?@@
c小题应该是求该点与原点的距离...
(以上是我对此题的判断@@ 我推到联立就卡住了>_<"
还是我思考的方向根本错了﹨(╯▽╰)∕)
2. If z = 5x^2 + y^2 and (x,y) changes from (1,2) to (1.05,2.1),
compute the value of δz and dz.
这题...看不懂题目@@ 麻烦指教一下>_<"" δz <--- 看无@@
by the way...发个小牢骚
94年微积分考古题是不是比较难呀...
我做93年跟92年考古题都还ok说...94真的挫折好大Q_Q~
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