Is a point of inflection concave or convex? - Which answer is correct?

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SUMMARY

The discussion centers on the characteristics of inflection points in relation to concavity and convexity of functions. It is established that a function does not require an inflection point to transition between concave and convex regions, particularly in cases where the function is undefined. Participants emphasize the importance of analyzing the sign of the second derivative across intervals to determine concavity and convexity accurately.

PREREQUISITES
  • Understanding of concavity and convexity in calculus
  • Knowledge of second derivatives and their significance
  • Familiarity with undefined points in mathematical functions
  • Basic skills in interval analysis
NEXT STEPS
  • Study the role of second derivatives in determining concavity and convexity
  • Learn about functions with undefined points and their implications
  • Explore interval analysis techniques in calculus
  • Review examples of functions that exhibit changes in concavity without inflection points
USEFUL FOR

Students and educators in mathematics, particularly those studying calculus, as well as anyone seeking to deepen their understanding of function behavior regarding concavity and convexity.

Sarah66
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Homework Statement
Hello everybody, :)
I have a problem with determining the intervals of convexity and concavity of this function:
Relevant Equations
there are no inflection points here for me
problem1.png

but for me there is no solution to this inequality...
I never wait for a ready answer but I've already spent 4 hours on it and I still don't know what to mark...
 
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Sarah66 said:
there are no inflection points here for me
There doesn’t need to be an inflection point to switch between concave and convex if there are points where the function is undefined.
 
Check the sign of the 2nd derivative on each interval if you aren't sure.
 

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