a. Graph the function 0 Sxs1 12 - x, 1

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter4: Polynomial And Rational Functions
Section4.2: Polynomial Functions
Problem 4SC
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Question
a. Graph the function
0 Sxs1
12 - x, 1<x< 2.
X,
f(x)
b. Is f continuous at x = 1?
c. Is f differentiable at x = 1?
с.
Give reasons for your answers.
Transcribed Image Text:a. Graph the function 0 Sxs1 12 - x, 1<x< 2. X, f(x) b. Is f continuous at x = 1? c. Is f differentiable at x = 1? с. Give reasons for your answers.
Expert Solution
Step 1

We have to find out the given function is continuous and differentiable at x=1 or not.

 

Step 2

Continuity at x=1:

Left hand limit

limx1-fx=limx1-x=1

Right hand limit:

limx1+fx=limx1+2-x=1

Value of function at x=1 is f1=1

Left hand limit, right hand limit and value of function at x=1 are equal.

So, function is continuous at x=1.

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