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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 _compute_acq_withGradients(self, x):
 """ Computes the GP-Lower Confidence Bound and its derivative """

        m, s, dmdx, dsdx = self.model.predict_withGradients(x) 
        f_acqu = -m + self.exploration_weight * s       
        df_acqu = -dmdx + self.exploration_weight * dsdx
        return f_acqu, df_acqu