Step * 1 of Lemma cosh0


(r(2) e^r0)/2 r1
BY
(RWW "int-rdiv-req rexp0" THEN Auto) }

1
(r(2) r1/r(2)) r1


Latex:


Latex:

(r(2)  *  e\^{}r0)/2  =  r1


By


Latex:
(RWW  "int-rdiv-req  rexp0"  0  THEN  Auto)




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