2]Mean Value Theorem & Rolle’s Theorem | Calculus | Engineering Mathematics

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In last tutorial we covered the basics required for Mean Value Theorem. In this video tutorial, we will first understand the Mean Value Theorem, then switch to special case of mean value theorem called “Rolle’s theorem” and understand the through one example.

Statement or definition of Mean Value Theorem:
If function is continuous on closed interval [a,b] and differentiable on open interval (a,b), then there exist a point c in the open interval (a,b) such that f’(c) = f(b) - f(a) / b-a
This simply, means that slope at point c is equal to the slope that joins points a and b. Secant joining endpoints [a,b] is parallel to the tangent at c.
Mean Value Theorem is explained through graphical representation.

Rolle’s Theorem:
Let function be continuous on closed interval [a,b] and differentiable on open interval (a,b). If f(a) is equal to f(b), then there is atleast one point c in (a,b) for which f’(c) = 0. If either condition continuity or differentiability fails, Rolle’s Theorem fails.
This statement is explained through one example.
Consider function f(x) = (x - 4) raise to 2 +1 from [2,5]

Check out the video tutorial for more better explanation.

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thank u very much mam... ur explanation is very nice and its very easy to understand....

vamsikrishna
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Very simply understandable.... Nice video 👍

vinayverma
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Beautifully explained mam.... It helps a lot ... Thanku soo much...

warriorclassesraebareli
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function should have continutity or not and it should be differentiable at close interval. please explain by this sum only.

rammodhwadiya
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hi mam how can I solve following question, f(x)=(x-1)(x-3)e^-x, [1, 3] satisfies all conditions of mean value theoren, then there exists at least one number c€(1, 3) such as....

vinodfunde
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If value of c doesn't belong (may be) to open interval then which case will rise

armanraja
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The last example does not satisfy Rolle's theorem?

jmgiv
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mam take some difficult problems on this
topic

manaskumarbehera
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u have eplained beautifully, i really like to learn more from u, i am especially HH candidate .. even u say something or not we can understand easily .. i hope u may add subtitle to this lecture so taht other HH candidate who are weak can easily understand

ajitkumarchoudhary