Although the square wave is not perfect, the more waves that are added, the closer it becomes to a square wave. (You can try this; here is the sum that made the graph on the right: \(1.0\ast\sin (t)+....Although the square wave is not perfect, the more waves that are added, the closer it becomes to a square wave. (You can try this; here is the sum that made the graph on the right: 1.0∗sin(t)+.3333∗sin(3∗t)+.2∗sin(5∗t)+.1428∗sin(7∗t)+.1111∗sin(9∗t)+.0909∗sin(11∗t)+0.0769∗sin(13∗t).