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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 _u0Eq(logu,delta,pot,E,Lz22):
 """The equation that needs to be minimized to find u0"""

    u= numpy.exp(logu)
    sinh2u= numpy.sinh(u)**2.
    cosh2u= numpy.cosh(u)**2.
    dU= cosh2u*actionAngleStaeckel.potentialStaeckel(u,numpy.pi/2.,pot,delta)
    return -(E*sinh2u-dU-Lz22/delta**2./sinh2u)