Answer to Question #750 in Calculus for Luke

Question #750
The floor function, ⌊x⌋, is defined as: ⌊x⌋ equals the largest integer less than or equal to x. Determine if (a) limx →n ⌊x⌋ and (b) limx→n+1/2 ⌊x⌋ exist, when n ∈ Z. If the limit exists give it.
Expert's answer
As ⌊x⌋ equals the largest integer less than or equal to x,
lim(x->n-)= n-1 from the left side of n;
lim(x->n+)= n from the right side of n.

n+1/2 is always less than n+1, thus
lim(x-> n+1/2) = n.

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