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# numpy.cosh

`numpy.``cosh`(x[, out]) = <ufunc 'cosh'>

  Hyperbolic cosine, element-wise.

  Equivalent to `1/2 * (np.exp(x) + np.exp(-x))` and `np.cos(1j*x)`.

  Parameters : | x : array_like Input array.
  Returns : | out : ndarray Output array of same shape as x.

  Examples

      >>> np.cosh(0)
      1.0

  The hyperbolic cosine describes the shape of a hanging cable:

      >>> import matplotlib.pyplot as plt
      >>> x = np.linspace(-4, 4, 1000)
      >>> plt.plot(x, np.cosh(x))
      >>> plt.show()

  (Source code, png, pdf)