Tính độ dài đường cong.
a/ $r = {e^\varphi },0 \le r \le 1$
b/ $\varphi = \frac{1}{2}\left( {r + \frac{1}{r}} \right)$
[HINT]Đề giữa kì ĐHBKHN[/HINT]
$\varphi = \frac{1}{2}\left( {r + \frac{1}{r}} \right)$
Started By vghy94, 29-11-2012 - 15:52
tính độ dài đường cong.
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
