Question

Suppose f(x) equals the greatest integer less than or equal to x. so, for example, f(1.99)=1, f(2)=2, and f(4.87)=4. Find the limit as x tends to 6 from the left.

lim f(x)
x->6-

Answer 1

ANSWER IS NOT 6 OR -6

Answer 2

I don't really understand this prob. It's prob the way they put it.

Answer 3

well,
lim f(x)
x->6-
is kind of like evaluating f(5.999999....)
so the answer is 5

Answer 4

why is it 5 though