# Function y=[x] (integer part of number)

Recall, that [x] is the biggest integer that is less or equal than x. For example, [0.1]=0,[1.9]=1,[-1.4]=-2.

If 0<=x<1, then y=[x]=0; if 1<=x<2, then y=[x]=1; if 2<=x<3, then y=[x]=2 etc.

Graph of the function y=[x] is shown. Note, that there are hole points: this means that, for example, near point 1 from left, i.e. at points, 0.8, 0.9, 0.99 etc. [x] equals 0, but at point 1 it is not 0, it is 1. In other words function "jumps".