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RC 低通滤波器，输入 u(t) = sin(omega t) 。对于 \omegatau = 0.1 、 \omegatau = 1 和 \omegatau = 10 计算稳态响应的幅度。
RC 低通滤波器，输入 u(t) = sin(omega t) 。对于 \omegatau = 0.1 、 \omegatau = 1 和 \omegatau = 10 计算稳态响应的幅度。
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