a) Find the limit, if the limit does not exist, so state or use the symbol ∞ or -∞ where appropriate.
lim_{x → -2^-} (x + 1) rac{|x + 2|}{x + 2}
b) Find the limit, if the limit does not exist, so state or use the symbol ∞ or -∞ where appropriate.
lim_{x → ∞} rac{x^2 - 5x}{x + 2}
c) For what values of a and b is
f(x) =
-1 , x ≤ -1
ax - b, -1 < x < 1
2 , x ≥ 1
continuous at every x ?