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Seuraavassa r, s, r, b sb : R C ovat itseisesti integroituvia. (a) Nyt, ett rb sb = crs , miss rs(t) := r(t)s(t). (b)
Seuraavassa r, s, r, b sb : R C ovat itseisesti integroituvia. (a) Nyt, ett rb sb = crs , miss rs(t) := r(t)s(t). (b) Olkoon s(t) = et , kun t 0, ja s(t) = 0, kun t < 0. Laske s s. Hahmottele mys funktion s s kuvaaja. (c) Signaalin r : R C elinaika on pienin intervalli [a, b] [,], jolle Z a |r(t)| 2 dt = 0 = Z b |r(t)| 2 dt. Jos signaalien r, s elinajat ovat [a, b], [c, d] R, niin mit voidaan sanoa signaalin r s elinajasta
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