3 2
(1)find a,b,c,d such that the cubic f(x)=ax +bx +cx+d satisfies the indicate
conditions.
relative maximun:(3,3)
relative minimun:(5,1)
inflection point:(4,2)
(2)判斷收斂或發散:
∞ 5
(a)Σ __________________
2
n=1 n+√(n +4)
n
(b) ∞ n7
Σ _______
n=1 n！
dx x-1
(3)find ____ (a) y=x
dy 1/x
(b) y=(1+x)
請各位大大指點..感激不盡
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