作者dreamenjoy (今天也很爽)
看板trans_math
标题几题
时间Wed Jun 1 21:59:28 2011
1.Given an ε-δ proof for the limit x^2+3x-2=8
x→2
2.Find a and b such that lim(sinax/x^3+b/x^2)=1/6
x→0
3
3.∫ x^2-4x+3/x^3+2x^2+x dx
1
k
4.Find the interval of convergence of the series (-1) k
Σ ———(x+2)
2 k
k 3
5.f(x.y)= xy(y^2-x^2)/x^2+y^2 , (x,y)≠(0,0) Show that Fxy(0,0)≠Fyx(0,0)
0 , (x,y)≠(0,0)
这题是把XY分别微出来比较就好了是吗??
2 √4-y^2 √4-x^2-y^2
6. ∫∫ ∫ z√x^2+y^2+z^2 dzdxdy
0 0 0
因为考古题有些没解答 只好来请教高手了
感恩
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 122.118.7.200
1F：推 nosignal90:我最近也写了这间的考古题说XD... 61.228.40.252 06/01 22:36
2F：→ dreamenjoy:真巧122.118.112.252 06/01 22:49