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  _____    __   __               ___     ______   
 /  ___||  \ \\/ //   ____      / _ \\  |      \\ 
| // __     \ ` //   |    \\   / //\ \\ |  --  // 
| \\_\ ||    | ||    | [] ||  |  ___  |||  --  \\ 
 \____//     |_||    |  __//  |_||  |_|||______// 
  `---`      `-`'    |_|`-`   `-`   `-` `------`  
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Text this: Frequency response functions and modal analysis of general nonviscously damped dynamic systems with and without repeated modes