Find the left and right limit, and determine whether the limit of function at this point exists, f (x) = arctan (1 / x), x = 0

Find the left and right limit, and determine whether the limit of function at this point exists, f (x) = arctan (1 / x), x = 0

So LIM (x → 0 +) arctan (1 / x) → limarctan (+ ∞) = π / 2x → 0 - 1 / X → - ∞ so LIM (x → 0 -) arctan (1 / x) → limarctan (- ∞) = - π / 2 because LIM (x → 0 +) arctan (1 / x) ≠ LIM (x → 0 -) arctan (1 / x), the limit of function at this point does not exist