※ 引述《bitchdog (PEaCE)》之銘言：
: 若f(x)= x(x-1)(x-2)...(x-10)
: ---------------------
: (x+1)....(x+10)
: 求f'(0)
f(x) - f(0)
lim -------------
f'(0)= x->0 x
(-1)(-2)...(-10)
= ------------------ = 1
1*2*3*...*10
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.112.128.88