def lame_param(E, v):
    la = (((E * v) / (1 + v)) / (1 - (2 * v)))
    mu = ((E / 2) / (1 + v))
    return (la, mu)
def lame_param(E, v):
    la = (((E * v) / (1 + v)) / (1 - (2 * v)))
    mu = ((E / 2) / (1 + v))
    return (la, mu)