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Fie sirul [tex](x_{n}) _{n}[/tex], definit prin [tex]x_{0}=2[/tex] si [tex]x_{n+1}=\frac{6x_{n} }{x_{n}+3 }[/tex] oricare ar fi n nr natural.
a.) Demonstrati ca: [tex]x_{n}=\frac{2^{n+1}*3 }{2^{n+1}+1}[/tex] oricare ar fi n nr natural.
b.) Calculati [tex]\lim_{n \to \infty} x_{n}[/tex] si [tex]\lim_{n \to \infty} (x_{n}-2 )^{2^{n} }[/tex]