推 Johnfu:感謝~~~ 03/10 15:53
※ 引述《Johnfu (ㄟ...)》之銘言：
: 1. n:正整數 n
: x (n)
: f(x) = _______ , 請問 f (x) =?
: 1-x
n
x - 1 + 1
f(x) = ───────
1 - x
n-1 n-2
(x - 1)(x + x + ... + 1) 1
= ──────────────── + ─────
1 - x 1 - x
n (n+1)!
f = 0 + ───────
(1 - x)^(n+1)
: 4 2
: 2. Find two points that y = x -8x -x that have a common tangent line.
: 3. Find the minimum of f(x,y,z) = 3x+2y+z+5 subject to the constrant
: 2 2
: g(x,y,z) = 9x +4y -z = 0
: 3
: 1 x t
: 4. lim _____ S e dt = ? (S是積分)
: x->2 x-2 2
: 6
: 請問答案是不是 e ??
: -----
: 感謝大家~~~
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