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# scipy.fftpack.ifftn

`scipy.fftpack.``ifftn`(x, shape=None, axes=None, overwrite_x=0)

  ifftn(x, s=None, axes=None, overwrite_x=0) -> y

  Return inverse multi-dimensional discrete Fourier transform of arbitrary type sequence x.

  The returned array contains

  > y[j_1,..,j_d] = 1/p * sum[k_1=0..n_1-1, ..., k_d=0..n_d-1]
  >   x[k_1,..,k_d] * prod[i=1..d] exp(sqrt(-1)*2*pi/n_i * j_i * k_i)

  where d = len(x.shape), n = x.shape, and p = prod[i=1..d] n_i.

  Optional input: see fftn.__doc__

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