docstr: Compute x s.t. Ax = b
docstr_tok: ["Compute","x","s.t",".","Ax","=","b"]
code: def solve(self, A, b):
      """
      Compute x s.t. Ax = b
      """
      if is_sparse(A) or is_sparse(b):
          A, b = A.tocsc(), b.tocsc()
          x = sparse.COO(scipy.sparse.linalg.spsolve(A, b))
      else:
          x = np.linalg.solve(A, b)
  
      return x
  
imports: from copy import copy
  from packaging.version import Version
  import numpy
  import scipy
  import scipy.linalg
  import scipy.sparse.linalg
  import sparse
  from .None import register_sparse_backend
  from ....backend.core import Backend
label_desc: Use image node_id 9 for calling the NumpySparseBackend obj's underlying member method code with example usage: obj.solve(A, b) and returns: x