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Step * of Lemma arctan_wf

∀[x:ℝ]. (arctan(x) ∈ ℝ)
BY
{ ((InstLemma `arctan_wf1` [] THEN ParallelLast THEN Auto) THEN MemTypeHD (-1) THEN Unhide THEN Auto) }

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Latex:

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Latex:
\mforall{}[x:\mBbbR{}].  (arctan(x)  \mmember{}  \mBbbR{})


By

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Latex:
((InstLemma  `arctan\_wf1`  []  THEN  ParallelLast  THEN  Auto)  THEN  MemTypeHD  (-1)  THEN  Unhide  THEN  Auto)

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