A. Write down an equation, D(x, t), for a transverse standing wave on a stringof length L = 0.20 m that is fixed at each end, given that the antinodes are at maximum displacement at t = 0. The standing wave has wavelength λ = 0.20 m and frequency f = 400 Hz. The maximum displacement of an antinode is 0.040 m. b. What is the period T of this wave?c. Draw a sketch of the standing wave at the following times t = 0, t = T/4, t= T/2.d. What are the values of x for all antinodes?e. What are the values of x for all nodes?f. Write down the equation for the two traveling waves that make up thisstanding wave. g. What is the speed of these travelling waves?