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  • (cur | prev) 07:19, 15 October 2008โ€Ž Rfscott (Talk)โ€Ž . . (448 bytes) (+448)โ€Ž . . (New page: == The question == Is the signal <math>x(t) = \sum_{k = -\infty}^\infty \frac{1}{(t+2k)^{2}+1}</math> periodic? <br> <math>x(t+2) = \sum_{k = -\infty}^\infty \frac{1}{(t+2+2k)^2+1}\,</ma...)

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