This is an example in my textbook how is it done?

given N â N, show

that (a_n) â â if and only if (a_(n+N)) â â and that this holds for negative infinity,

Thanks

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# question regarding infinity sequences and proof.

given N â N, show

that (a_n) â â if and only if (a_(n+N)) â â and that this holds for negative infinity,

Thanks