why is y=[x] a non-peridic function and y={x} a peridoc one ?i mean plzzz prove it

{x}=x-[x]

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thank u

yeah . if u observe the graph {x} , u see that the graph repeats at regular intervals.thus we say periodic. (on x axis lie between  0 to 1) and any number can be written as x = {x} + [x]  so {x} =x - [x]  has period  1.  just draw the graphhhhhhhhhhhhh.