I want to prove this exercise:
Let $x_n \to x$ and $y_n \to y$ for $n \to \infty$ Prove that, $x_n^{y_n} \to x^y$.
My attempt:
Let $\epsilon > 0$ and $N_1 \in \mathbb{N}$ such that $|x_n - x| < \epsilon \forall n \geq N_1 $ and $N_2 \in \mathbb{N}$ such that $|y_n - y| < \epsilon \forall n \geq N_2 $ Then:
$$|x_n^{y_n} - x^y| =x^y |e^{(y_n-y)\ln x_n + y \ln(x_n/x)}-1|$$
What to do now?