I'm puzzled and don't know where to begin with this question; it goes like(adsbygoogle = window.adsbygoogle || []).push({});

"Consider the function f:R²-->R defined by

[tex]f(x,y) = \sum_{n=1}^{\infty}\frac{(-1)^n}{n^2}sin(nx)sin(ny)[/tex]

Show that f is continuous."

Any hint?

.

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# Homework Help: Fourier analysis prob.

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