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Finding Where F is concave up/down using the graph of the first derivative

  • #1
1. I need to find where the graph of f is CU or CD given the graph of f ' .



2. So far I have found that F inc. on (2,4) and (6,9). F has a local max at 4. F has a local min at 2 and 6.
 

Answers and Replies

  • #2
236
0
When f' is increasing, i.e. when f''>0, f is concave up, and conversely.
 
  • #3
159
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you have to find f '' then you can judge concavity
if f'' is bigger than 0 then it's concave up if f'' is smaller than 0 than it is concave down
 
Last edited:

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