$\large \lim_{x \to \infty} \frac{x^2+i^2 +x^3-i^3}{\tan(2017^\circ) \sin(2018^\circ) \cos(2019^\circ)} = \ ?$

**
Notation:
**
$i = \sqrt{-1}$
denotes the
imaginary unit
.

$-\infty$
$\infty$
Undefined
$1$
$0$

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