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Text this: PERSAMAAN GELOMBANG PADA MEMBRAN PERSEGI PANJANG DAN MEMBRAN LINGKARAN (WAVE EQUATION IN RECTANGULAR MEMBRANE AND CIRCULAR MEMBRANE)

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           _    _     _____      ___     _    _   
    ___   | || | ||  / ____||   / _ \\  | |  | || 
   /   || | || | || / //---`'  / //\ \\ | |/\| || 
  | [] || | \\_/ || \ \\___   |  ___  |||  /\  || 
   \__ ||  \____//   \_____|| |_||  |_|||_// \_|| 
    -|_||   `---`     `----`  `-`   `-` `-`   `-` 
     `-`

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