code: def eigh_tridiagonal(
      alpha: Union[(None, mx.ndarray.NDArray)],
      beta: Union[(None, mx.ndarray.NDArray)],
      /,
      *,
      eigvals_only: bool = True,
      select: str = "a",
      select_range: Optional[
          Union[
              (Tuple[(int, int)], List[int], None, mx.ndarray.NDArray)
          ]
      ] = None,
      tol: Optional[float] = None,
  ) -> Union[
      (
          None,
          mx.ndarray.NDArray,
          Tuple[
              (
                  Union[(None, mx.ndarray.NDArray)],
                  Union[(None, mx.ndarray.NDArray)],
              )
          ],
      )
  ]:
      raise IvyNotImplementedException()
  
file_path: ivy/ivy/functional/backends/mxnet/experimental/linear_algebra.py
imports: from typing import Union, Optional, Tuple, List, Sequence
  import mxnet
  from ivy.utils.exceptions import IvyNotImplementedException
label_desc: Use image node_id 1 for calling a global function with example usage: eigh_tridiagonal() without return types