Step
*
3
of Lemma
fast-rexp_wf
1. x : ℝ
2. x1 : {x1:ℝ| x1 ∈ [(r((x 200) - 2))/400, (r((x 200) + 2))/400]}
⊢ |e^x1| ≤ r(canonical-bound(e^(r((x 200) + 2))/400))
BY
{ ((D -1 THEN (Unhide THENA Auto))
THEN Reduce -1
THEN D -1
THEN MoveToConcl (-1)
THEN (Subst' (r((x 200) + 2))/400 ~ above x within 1/100 0
THENA (Unfold `rational-upper-approx` 0 THEN Reduce 0 THEN CallByValueReduce 0 THEN Auto)
)
THEN (InstLemma `rational-upper-approx-property` [⌜x⌝;⌜100⌝]⋅ THENA Auto)
THEN MoveToConcl (-1)
THEN GenConcl ⌜above x within 1/100 = u ∈ ℝ⌝⋅
THEN Auto) }
1
1. x : ℝ
2. x1 : ℝ
3. (r((x 200) - 2))/400 ≤ x1
4. u : ℝ
5. above x within 1/100 = u ∈ ℝ
6. (u - (r1/r(100))) ≤ x
7. x ≤ u
8. x1 ≤ u
⊢ |e^x1| ≤ r(canonical-bound(e^u))
Latex:
Latex:
1. x : \mBbbR{}
2. x1 : \{x1:\mBbbR{}| x1 \mmember{} [(r((x 200) - 2))/400, (r((x 200) + 2))/400]\}
\mvdash{} |e\^{}x1| \mleq{} r(canonical-bound(e\^{}(r((x 200) + 2))/400))
By
Latex:
((D -1 THEN (Unhide THENA Auto))
THEN Reduce -1
THEN D -1
THEN MoveToConcl (-1)
THEN (Subst' (r((x 200) + 2))/400 \msim{} above x within 1/100 0
THENA (Unfold `rational-upper-approx` 0 THEN Reduce 0 THEN CallByValueReduce 0 THEN Auto)
)
THEN (InstLemma `rational-upper-approx-property` [\mkleeneopen{}x\mkleeneclose{};\mkleeneopen{}100\mkleeneclose{}]\mcdot{} THENA Auto)
THEN MoveToConcl (-1)
THEN GenConcl \mkleeneopen{}above x within 1/100 = u\mkleeneclose{}\mcdot{}
THEN Auto)
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