Step * of Lemma rabs-difference-sine-rleq

x,y:ℝ.  (|sine(x) sine(y)| ≤ |x y|)
BY
((InstLemma `mean-value-for-bounded-derivative` [⌜(-∞, ∞)⌝;⌜λ2x.sine(x)⌝;⌜λ2x.cosine(x)⌝;⌜r1⌝]⋅ THENA Auto)
   THEN Try ((RWO "-1" THEN Auto))
   THEN nRNorm 0
   THEN Auto) }


Latex:


Latex:
\mforall{}x,y:\mBbbR{}.    (|sine(x)  -  sine(y)|  \mleq{}  |x  -  y|)


By


Latex:
((InstLemma  `mean-value-for-bounded-derivative`  [\mkleeneopen{}(-\minfty{},  \minfty{})\mkleeneclose{};\mkleeneopen{}\mlambda{}\msubtwo{}x.sine(x)\mkleeneclose{};\mkleeneopen{}\mlambda{}\msubtwo{}x.cosine(x)\mkleeneclose{};\mkleeneopen{}r1\mkleeneclose{}]\mcdot{}
    THENA  Auto
    )
  THEN  Try  ((RWO  "-1"  0  THEN  Auto))
  THEN  nRNorm  0
  THEN  Auto)




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