Asked by Jen
f(x) = x^4 + ax^2
What is a if f(x) has a local minimum at x=5.
How do I justify the answer.
The first derivative has to be zero at x = 5. You then check what the second derivative is at x = 5. If it is positive then that's ok.
In this case you find that a = -50 and that the second derivative at x = 5 is positive.
What is a if f(x) has a local minimum at x=5.
How do I justify the answer.
The first derivative has to be zero at x = 5. You then check what the second derivative is at x = 5. If it is positive then that's ok.
In this case you find that a = -50 and that the second derivative at x = 5 is positive.
Answers
There are no human answers yet.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.