4.我主要問: (請列舉您的問題以便板友回應！)
Find a, b, c and d such that the cubic f(X)= ax^3+ bx^2+ cx+ d
satisfies the indicated conditions.
Relative maximun:(3,3)
Relative minimun:(5,1)
Inflection point:(4,2)
我只算得 a=2/3，其他我不會!請…教我!我會用心學的!還有一題~
Find a and b such that
f(x)= ax^3, x小於等於2 and x^2+b, x大於2 is differentiable everywhere.
這題我是想到若可微、極限存在→是嗎?可是我還是不會做~教我~求救!!
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