How many points of discontinuity does the function have in the interval ?

MATHEMATICS · Single correct · AoPS · Mathematics · Special Functions · Special Functions

Problem

How many points of discontinuity does the function

f(x)=\lfloor 2x \rfloor

have in the interval

[0,3]

? (a) 7 (b) 6 (c) 5 (d) 8