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Question Number 91085 by jagoll last updated on 28/Apr/20

f(x) = ⌈2x−1⌉   f(3) , f(4) = ?

$${f}\left({x}\right)\:=\:\lceil\mathrm{2}{x}−\mathrm{1}\rceil\: \\ $$$${f}\left(\mathrm{3}\right)\:,\:{f}\left(\mathrm{4}\right)\:=\:? \\ $$

Commented by  M±th+et+s last updated on 28/Apr/20

if [...] is ceil  f(3)=⌈6−1⌉=⌈5⌉=5  f(4)=⌈7⌉=7

$${if}\:\left[...\right]\:{is}\:{ceil} \\ $$$${f}\left(\mathrm{3}\right)=\lceil\mathrm{6}−\mathrm{1}\rceil=\lceil\mathrm{5}\rceil=\mathrm{5} \\ $$$${f}\left(\mathrm{4}\right)=\lceil\mathrm{7}\rceil=\mathrm{7} \\ $$

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