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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def beta_hat(self):
 """compute ML beta"""

        XKY = self.XKY()
        XanyKY = self.XanyKY()
        beta_hat, beta_hat_any = self.Areml_solver.solve(b_any=XanyKY,b=XKY,check_finite=True)
        return beta_hat, beta_hat_any