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Let y = f (x). State the definition for the continuity of the function f at a point c in the domain of f .

Short Answer

Expert verified

Thecontinuityordiscontinuityoffatapoint'c'canbesaidonlywhen'c'isinthedomainoff

Step by step solution

01

Step 1. Given information is:

A function y = f(x)

02

Step 2. Checking continuity of function f

Considery=f(x)Theobjectiveistodefinethecontinuityofthefunctionfatapointcinthedomainoff.Definition:Risthesetofrealnumbers.LetER,f:ERandcE,thenwesaythatfiscontinuousatcisgivenε>0thereexistsaδ>0suchthatf(x)-f(c)<εwheneverxEandx-c<δ.Iffisnotcontinuousatc,thenwesaythatfisdiscontinuousatc.Note:thecontinuityordiscontinuityoffatapoint'c'canbesaidonlywhen'c'isinthedomainoff.Forexample:Apolynomialfunctiondefinedbyf:RRandf(x)=-5x+10iscontinuousateverypointofR.

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