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It is only when they go wrong that machines remind you how powerful they are. Clive James		Saturday Mar 14, 2026
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The Mean Value Theorem is the midwife of calculus -- not very important or glamorous by itself, but often helping to delivery other theorems that are of major significance. E. Purcell

Quote Author: E. Purcell

	E. Purcell
	Calculus with Analytic Geomety, fifth edition, Englewood Cliffs, NJ: Prentice Hall, 1987 - and Varberg, D.

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The Mean Value Theorem is the midwife of calculus -- not very important or glamorous by itself, but often helping to delivery other theorems that are of major significance.