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Step * of Lemma derivative_wf

∀[I:Interval]. ∀[f,g:I ⟶ℝ].  (λx.g[x] = d(f[x])/dx on I ∈ ℙ)
BY
{ (ProveWfLemma THEN ∀h:hyp. (FLemma `i-member-approx` [h] THEN Auto) ) }

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Latex:

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Latex:
\mforall{}[I:Interval].  \mforall{}[f,g:I  {}\mrightarrow{}\mBbbR{}].    (\mlambda{}x.g[x]  =  d(f[x])/dx  on  I  \mmember{}  \mBbbP{})


By

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Latex:
(ProveWfLemma  THEN  \mforall{}h:hyp.  (FLemma  `i-member-approx`  [h]  THEN  Auto)  )

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