Anonymous From: - Posts: - Votes: - |
F(x)=x+4/x f'(x)= 1-4x-2 f"(x)=8x-3 To find inflection point, when i set f"(x)=0 it is inconclusive. Does this mean there is no inflection point? |

seth111yta1 From: US Posts: 29 Votes: 58 |
We can see that if there is an inflection point it has to be at x = 0. But how do we know for sure if x = 0 is an inflection point? We have to make sure that the concavity actually changes. To do this pick a number on either side of x = 0 and check what the concavity is at those locations, so in this case yes there is no point |

LovelyTeacher From: US Posts: 3 Votes: 12 |
Yes it means there is no inflexion point the curve does not change its concavity |

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