99年師大物理系轉學考
Let f(x)=[x^2/3](x-1)Which of following is NOT true?
(A)f has an inflection point at x=1/5
(B)f has a relative maximum at x=0
(C)f has a relative minimum at x=2/5
(D) f(x)逼近 負無限大as X逼近 負無限大
我算Ａ的答案應該是-1/5
但Ｂ好像也是錯的
想請教一下大家
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