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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 _calc_b(w, aod700):
 """Calculate the b coefficient."""


    b1 = 0.00925*aod700**2 + 0.0148*aod700 - 0.0172
    b0 = -0.7565*aod700**2 + 0.5057*aod700 + 0.4557

    b = b1 * np.log(w) + b0

    return b