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Math Help - converge

  1. #1
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    converge

    x_n=(-1)^n and f(x)=x^3

    does the sequence f(x_n) converge(to anything)? I know x_n doesn't converge to anything. is f(x_n)=x_nx_nx_n?
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  2. #2
    Moo
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    Hello,

    f(x_n)=(x_n)^3=[(-1)^n]^3=[(-1)^3]^n=(-1)^n
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