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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 cartisian_from_fractional(coordinate, lattice_array):
 """Return cartesian coordinate from a fractional one."""

    orthogonalisation_M = np.matrix(lattice_array)
    orthogonal = orthogonalisation_M * coordinate.reshape(-1, 1)
    return np.array(orthogonal.reshape(1, -1))