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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 funTransSectX(theta, rho):
 """ Sector matrix in X :param theta: bend angle, in [rad] :param rho: bend radius, in [m] :return: 2x2 numpy array """

    return np.matrix([[np.cos(theta), rho * np.sin(theta)], [-np.sin(theta) / rho, np.cos(theta)]], dtype=np.double)