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Show-that-1-3n-lt-n-2-for-every-positive-integer-n-4-




Question Number 142379 by Rexzie last updated on 30/May/21
Show that 1+3n<n^2  for every positive integer n≥4
Showthat1+3n<n2foreverypositiveintegern4
Commented by mr W last updated on 30/May/21
n≥4  n^2 ≥4n=3n+n≥3n+4>3n+1
n4n24n=3n+n3n+4>3n+1

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