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e^(i π t + i M π t - x) sum[ (j^(1 + 4) x^j)/((-1 + e^(i π t) j) j!),{j,0,infty}]
e^(i π t + i M π t - x) sum[ (j^(1 + 4) x^j)/((-1 + e^(i π t) j) j!),{j,0,infty}]
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