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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 deriv(self, p):
 """ Derivative of the power transform Parameters p : array-like Mean parameters Returns -------- g'(p) : array Derivative of power transform of `p` Notes ----- g'(`p`) = `power` * `p`**(`power` - 1) """

        return self.power * np.power(p, self.power - 1)