Recall from calculus, if a function is differentiable at a point c, then it is continuous at c, but that the converse of this statement is not true (for example, f(x) = |x| at the point 0). Restate this fact using "necessary and sufficient" language.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section2.7: Combining Functions
Problem 4E: We can express the function in Exercise 3 algebraically as f(x)=g(x)= (fg)(x)=(gf)(x)=
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Recall from calculus, if a function is differentiable at a point c, then
it is continuous at c, but that the converse of this statement is not
true (for example, f(x) = |x| at the point 0). Restate this fact using
"necessary and sufficient" language.
Transcribed Image Text:Recall from calculus, if a function is differentiable at a point c, then it is continuous at c, but that the converse of this statement is not true (for example, f(x) = |x| at the point 0). Restate this fact using "necessary and sufficient" language.
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