Which of the following represents a standing wave? A) y = (6.0 mm)sin[(3.0 m^-¹)x + (2.0 s^-¹)t] - (6.0 mm)cos[(3.0 m^-¹)x + 2.0] B) y = (6.0 mm)cos[(3.0 m^-¹)x - (2.0 s^-¹)t] + (6.0 mm)cos[(2.0 s^-¹)t + 3.0 m^-¹)x] C) y = (6.0 mm)cos[(3.0 m^-¹)x - (2.0 s^-¹)t] - (6.0 mm)sin[(2.0 s^-¹)t - 3.0] D) y = (6.0 mm)sin[(3.0 m^-¹)x - (2.0 s^-¹)t] - (6.0 mm)cos[(2.0 s^-¹)t + 3.0 m^-¹)x] E) y = (6.0 mm)sin[(3.0 m^-¹)x] + (6.0 mm)cos[(2.0 s^-¹)t]

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The Answer of Which of the following represents a standing wave? A) y = (6.0 mm)sin[(3.0 m^-¹)x + (2.0 s^-¹)t] - (6.0 mm)cos[(3.0 m^-¹)x + 2.0] B) y = (6.0 mm)cos[(3.0 m^-¹)x - (2.0 s^-¹)t] + (6.0 mm)cos[(2.0 s^-¹)t + 3.0 m^-¹)x] C) y = (6.0 mm)cos[(3.0 m^-¹)x - (2.0 s^-¹)t] - (6.0 mm)sin[(2.0 s^-¹)t - 3.0] D) y = (6.0 mm)sin[(3.0 m^-¹)x - (2.0 s^-¹)t] - (6.0 mm)cos[(2.0 s^-¹)t + 3.0 m^-¹)x] E) y = (6.0 mm)sin[(3.0 m^-¹)x] + (6.0 mm)cos[(2.0 s^-¹)t]

Which of the Following Represents a Standing Wave