[Video Solution] The number of functions
f:\1,2,3,4\\to \\,a\in \mathbbZ\mid |a|\le 8\,\
sat... | ASPIRE STUDY
The number of functions
f:\1,2,3,4\\to \\,a\in \mathbbZ\mid |a|\le 8\,\
satisfying f(n)+\dfrac1nf(n+1)=1,\ \forall\, n\in\1,2,3\ is:
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