code: def gelu(
      x: None,
      /,
      *,
      approximate: bool = False,
      complex_mode="jax",
      out: Optional[None] = None,
  ) -> None:
      if approximate:
          return (
              0.5
              * x
              * (
                  1
                  + mx.nd.tanh(
                      ((2 / np.pi) ** 0.5) * (x + 0.044715 * x**3)
                  )
              )
          )
      return mx.nd.LeakyReLU(x, act_type="gelu")
  
file_path: ivy/ivy/functional/backends/mxnet/activations.py
imports: import mxnet
  import numpy
  from ivy.utils.exceptions import IvyNotImplementedException
  from typing import Optional, Union
label_desc: Use image node_id 1 for calling a global function with example usage: gelu() and returns: mx, unknown