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Step * 2 1 1 1 of Lemma rcos-positive


1. x : {x:ℝ| x ∈ (-(π/2), π/2)} 
2. x < (r1/r(1000))
3. (r(-1)/r(1000)) < x
4. -((r1/r(1000))) = (r(-1)/r(1000))
⊢ -((r1/r(1000))) < x
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{ Auto }

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Latex:

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Latex:

1.  x  :  \{x:\mBbbR{}|  x  \mmember{}  (-(\mpi{}/2),  \mpi{}/2)\} 
2.  x  <  (r1/r(1000))
3.  (r(-1)/r(1000))  <  x
4.  -((r1/r(1000)))  =  (r(-1)/r(1000))
\mvdash{}  -((r1/r(1000)))  <  x


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Latex:
Auto

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