Step
*
of Lemma
continuous-rnexp2
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∀I:Interval. ∀f:I ⟶ℝ. (f[x] continuous for x ∈ I
⇒ (∀n:ℕ. f[x]^n continuous for x ∈ I))
BY
{ InductionOnNat }
1
.....basecase.....
1. I : Interval
2. f : I ⟶ℝ
3. f[x] continuous for x ∈ I
⊢ f[x]^0 continuous for x ∈ I
2
.....upcase.....
1. I : Interval
2. f : I ⟶ℝ
3. f[x] continuous for x ∈ I
4. n : ℤ
5. [%2] : 0 < n
6. f[x]^n - 1 continuous for x ∈ I
⊢ f[x]^n continuous for x ∈ I
Latex:
Latex:
No Annotations
\mforall{}I:Interval. \mforall{}f:I {}\mrightarrow{}\mBbbR{}. (f[x] continuous for x \mmember{} I {}\mRightarrow{} (\mforall{}n:\mBbbN{}. f[x]\^{}n continuous for x \mmember{} I))
By
Latex:
InductionOnNat
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