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Step * of Lemma alt-arcsin_wf

∀[a:{a:ℝ| a ∈ (r(-1), r1)} ]. (alt-arcsin(a) ∈ {y:ℝ| y = arcsine(a)} )
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[a:\{a:\mBbbR{}|  a  \mmember{}  (r(-1),  r1)\}  ].  (alt-arcsin(a)  \mmember{}  \{y:\mBbbR{}|  y  =  arcsine(a)\}  )


By

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Latex:
ProveWfLemma

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