作者tiyico (宏)
看板trans_math
标题[考古] 蛮多题的
时间Mon Jan 29 18:30:26 2007
xy(x^2-y^2)
{ ------------- (x,y) =/= (0,0)
01. f(x,y) ={ x^2+y^2
{
0 (x,y) = (0,0)
then f (0,0) = ? f (0,0) = ?
xy yx
x^2 y^2 z^2
02. Let R be the region inside the ellipsiod ----- + ----- + ----- = 1
a^2 b^2 c^2
(a,b,c >0)
and above the plane z = b-y, then the volumn of the region R is ??
x^2˙sin(1/x)
03. lim ------------- (我算0但是不确定耶..)
x->0 tanx
1 sin(πx^2) 1
04. prove 0 < ∫ ---------- dx < ---ln2
-1/√2 x 2
没头绪
感激赐教了
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 218.167.192.48
1F：推 dgf130:好面熟阿..95台联大的题目... 218.170.153.46 01/29 22:41