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Zeraoulia rafik's user avatar
Zeraoulia rafik's user avatar
Zeraoulia rafik's user avatar
Zeraoulia rafik
  • Member for 9 years, 6 months
  • Last seen more than 9 years ago
  • Algeria
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Teacher at high school ,interesting :dynamical system and chaos theory ,and number theory

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for which values of $\theta$ does this equation $x_{n+1}=\cos(\theta)x^2_{n}-\sin(\theta)x^2_{n-1}$ have bounded solutions?
Jun 16, 2015
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6
How do I evaluate this sum :$\sum_{n=0}^{\infty} \frac{\sin(n!)}{\cos(n!)}$ if it's not open problem?
Jun 23, 2015
question
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Is this similarity to the Fourier transform of the von Mangoldt function real? [duplicate]
Jun 21, 2015
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How do I evaluate this sum :$\sum_{n=0}^{\infty} \frac{\sin(n!)}{\cos(n!)}$?
5
Has this difference equation :$x_{n+1}=Ax^2_{n}-Bx^2_{n-1}$ been studied before?