So it's official, I hate my college calculus class. I have 3 problems for homework and 2 just make me wanna shoot myself. I miss algebra. Edit: for anyone willing to help or to explain better Prove that: Lim x--->0+ f(x) square rootX [1+sin^2(2pi/x] = 0 f(x) = [[x]] + [[-x]] Lim x-->2 Show limit f(x) exists but not = 2 ( [[x]] means greatest integer function ) Edit again: come here looking for help/ people to relate with and am met with the exact opposite. Thanks Bungie community.