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→Integrals and Sums
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\dm{\sum_{k = 0}^{j + n} a_k = e^{a + b - c}} et \par \m{\sum_{k = 0}^{j + n} a_k = e^{a + b - c}}}\par\dm{\int_a^b f(x) \dd x } \par \m{\int_a^b f(x) \dd x } \par
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