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I have to write function which:

  • R as domain

  • is monotonous on all its domain

  • f'(-1)=f'(1)=0 [it is first derivation]

I cannot think of that one. :) Can you please help me? thx a lot

naruto25
  • 461

1 Answers1

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What about $f(x)=\pi x+\sin(\pi x)$? Can you check that all those conditions hold for this function?