I am trying to find the Fourier transform of the Laplacian operator for a function $u(x)$ where $x$ is a vector in $\mathbb{R}^n$.I am trying to use the definitions but I am struggling cause we work in $\mathbb{R}^n$.
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2Include in the question the definitions you are using, what is your work so far, and where are you stuck. – Jackozee Hakkiuz Jun 30 '18 at 00:18
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Yes, this is standard stuff, so I imagine that the real task is for you to make more precise in your own mind what the issue is. Then you will be able to ask an answerable question. – paul garrett Jun 30 '18 at 00:24