Differences
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| Both sides previous revision Previous revision | Next revisionBoth sides next revision | ||
| 수학:크로네커_델타 [2021/11/16 14:24] – [합으로의 표현] admin | 수학:크로네커_델타 [2021/11/16 14:25] – [적분 표현] admin | ||
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| ======적분 표현====== | ======적분 표현====== | ||
| - | [[:수학: | + | [[수학:푸리에 변환|푸리에 급수]]에서 |
| $$f(x) = \sum_{n=-\infty}^\infty c_n e^{inx}$$ | $$f(x) = \sum_{n=-\infty}^\infty c_n e^{inx}$$ | ||
| $$c_n = \frac{1}{2\pi} \int_{-\pi}^\pi f(x) e^{-inx} dx$$ | $$c_n = \frac{1}{2\pi} \int_{-\pi}^\pi f(x) e^{-inx} dx$$ | ||