Double integration of $\frac{1}{\sqrt{x^2 + y^4}}$

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I am just learning double integration. I am stuck with the following problem: $$\int_{\mathbb{R}^2}\frac{1}{\sqrt{x^2 + y^4}}\,dx\,dy$$

I am not even sure whether is integral is finite. I would really appreciate some help on this.

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The integral is not finite. For a fixed $y$ (for convenience take $y=0$), we have the integral $\int_{-\infty}^{\infty}\frac{1}{|x|}dx$