$$\lim_{x \to \infty} \tan^{3}{\left(x \right)}$$ $$\lim_{x \to 0^-} \tan^{3}{\left(x \right)} = 0$$ More at x→0 from the left $$\lim_{x \to 0^+} \tan^{3}{\left(x \right)} = 0$$ More at x→0 from the right $$\lim_{x \to 1^-} \tan^{3}{\left(x \right)} = \tan^{3}{\left(1 \right)}$$ More at x→1 from the left $$\lim_{x \to 1^+} \tan^{3}{\left(x \right)} = \tan^{3}{\left(1 \right)}$$ More at x→1 from the right $$\lim_{x \to -\infty} \tan^{3}{\left(x \right)}$$ More at x→-oo