Consider an real-valued analog signal r(t) with a band-limited spectrum X (2)| (see Figure 3). This is sampled discretely with a sampling rate of 8 kHz (with no anti-aliasing). Sketch the resulting (aliased) spectrum X (@w)|. |X (jn) | 3 2 1 0 0 1 5 6 Frequency [kHz] Figure 3: Analog spectrum X (2)| 2 3 4 7 00 9 10