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Mathematics, 24.12.2021 04:30 gilbertnessa2107
Cho x1(n)= r(n). rect4(n-1); x2(n)= 2n[u(n)-u(n-3)]. Tính x(n)= x1(n)*x2(n)
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Cho x1(n)= r(n). rect4(n-1); x2(n)= 2n[u(n)-u(n-3)]. Tính x(n)= x1(n)*x2(n)...
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