Question: numeric solution4

Hi!

Thanks a lot. you solved my first problem. Now I have a new problem. Consider I have an equation like:

w(z) = 1-(2/H(z))*diff(H(z),z)

I want to plot "w" with respect to "z", but since with latter solving I don't have any functional form for H(z) I can't. What's your suggestion for this?

Thank you!

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