Create the Simulink model shown in Figure 1.23. Select the signal generator as a square wave with amplitude 0.5 and frequency \(0.5 \mathrm{rad} / \mathrm{sec}\). To flip the gain block, right click on it, then go to Rotate \& Flip, and choose the "Flip Block" option. Double-clicking the Sum (Commonly Used Blocks) allows control over the list of desired signs. Run simulation and generate a figure that can be imported into a document.

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FIGURE 1.23 Problem 20. Signal generator Sum 0000 DD Square wave Amplitude = 0.5 Frequency 0.5 rad/s Integrator Scope 1 Outl Feedback gain