4- A stretched string extends from x=0 to x=L. The end x= is clamped but the end at x=L is attached to the wall so that it is free to more up and donor along 'y'. This means that the 'noundarjg.r condition at x=L is 5;: Ex x-L = o. A) Find the allowed frequencies if the speed of waves is 'c'. E) Find the general solution given the initial conditions ytsm ; 611:5: |x__,_0 = o