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# Math Help please Piece Wise Functions.

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Let $$f(x) = \begin{cases} k(x) &\text{if }x>0, \\ -\frac1{2x}&\text{if }x< 0\\ 0&\text{if }x=0. \end{cases}$$Find the function $$k(x)$$ such that $$f(x)$$ is its own inverse function.

Nov 1, 2021

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The last time I gave you a big answer and you did not respond in any way.

https://web2.0calc.com/questions/math-help-pls_12

Do you think that this would encourage me to answer you now?

Nov 1, 2021
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Im sorry Melody I didn't know that Im supposed to respond but your answer did help me soo much in the last problem.

Jmaster10  Nov 1, 2021
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You respond to my criticism politely with words,  but you add a thumbs down.  Good one.

So you know how to give thumbs down, thumbs up must be more difficult.

Oh I am sorry, I can see that you know how to give yourself a thumbs up.  The button must work after all.

You really are out to encourage help.

Nov 1, 2021
edited by Melody  Nov 1, 2021
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Sending me abusive private messages really helps too.

Melody  Nov 2, 2021
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Jmaster, this may be your swan song

Nov 2, 2021
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Hi Jmaster10,

What is the point of the solution without perhaps having understood (at least) something yourself (from it)?

Straight

Nov 2, 2021