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# scipy.signal.ss2tf

`scipy.signal.``ss2tf`(A, B, C, D, input=0)

  State-space to transfer function.

  Inputs:

  > A, B, C, D – state-space representation of linear system. input – For multiple-input systems, the input to use.

  Outputs:

  > num, den – Numerator and denominator polynomials (as sequences)
  >   respectively.

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