Relative Maximum of x + k/x at x=-2

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SUMMARY

The discussion centers on determining the value of k for the function f(x) = x + k/x to achieve a relative maximum at x = -2. Participants emphasize the necessity of finding the derivative f'(x) and setting it to zero to identify critical points. By substituting x = -2 into the derivative equation, one can solve for k, ensuring that the function has a critical point at the specified x-value. The conversation encourages sharing attempts to foster collaborative problem-solving.

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  • Understanding of calculus, specifically derivatives and critical points.
  • Familiarity with the concept of relative maxima in functions.
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Students and educators in mathematics, particularly those studying calculus, as well as anyone interested in understanding the behavior of rational functions and their extrema.

tandoorichicken
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For what value of k will [tex]x + \frac{k}{x}[/tex] have a relative maximum at x= -2?
 
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Looks straight forward to me.

In order to have a critical point at all we must have f'(x)= 0.
What is the derivative of f? In order that there be a critical point at x= -2, put x= -2 in f'(x)= 0 and solve for k.
 
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Hey Tandoori
Most of ur Qs are straightforward

So it is better if u show ur attempt also
 

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