Sx³, x < 2 f(x) lax?, х > 2 x²,

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter5: Solving Systems Of Linear Equations
Section5.1: Solving Systems Of Linear Equations By Graphing
Problem 35E
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Find the constant a, or the constants a and b, such that the function is continuous on the entire real number line.

Sx³,
x < 2
f(x)
lax?, х > 2
x²,
Transcribed Image Text:Sx³, x < 2 f(x) lax?, х > 2 x²,
Expert Solution
Step 1

Given function is f(x)=x3, x2ax2,x>2

 

Step 2

We have to find the value of constant a.

From given f(x) is continuous on the entire real number line.

Here we take f(x) is continuous at x=2.

By definition of continuity at x=a we get,

 

limxa-f(x)=limxa+f(x)

 

Step 3

At x=2 the function f(x) is continuous 

Therefore

limx2-f(x)=limx2+f(x)

From the given function we get left hand limit= x3

& right hand limit= ax2

By substituting above limit values in definition of continuity we get,

limx2-x3=limx2+ax2

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