How Many Points of Inflection Does $f ( x ) = x ^ { 3 } e ^ { - x }$

question 259

Multiple Choice

How many points of inflection does $f ( x ) = x ^ { 3 } e ^ { - x }$ have?

• A)0
• B)1
• C)2
• D)3
• E)4
• F)5
• G)6
• H)Infinitely many

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