Consider the function (x)=x²+2x . Using the limit definition of the derivative, show that for any real number a, the derivative of this function exists at x=a and is equal to 2a+2.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 2SE: If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local...
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Please include a formal proof. Thanks!

Consider the function (x)=x²+2x . Using the limit definition of the derivative, show
that for any real number a, the derivative of this function exists at x=a and is equal to
2a+2.
Transcribed Image Text:Consider the function (x)=x²+2x . Using the limit definition of the derivative, show that for any real number a, the derivative of this function exists at x=a and is equal to 2a+2.
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