If both first and second derivatives are zero then what can you conclude

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[ko-Daegu]

I thought the answer would be we can't confirm hence we need to use another test and here's the test we should be using this is just telling you that you can't confirm and that's it

[justinaacuriouswanderer]

thank you teacher. :) but when the second derivative equals zero, doesn't that help us conclude there is an inflection point at x=a ??

[Akk-vrlj]

Sir if the derivatives are non zero then will they be one one function