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91Ó°ÊÓ

For each of the limit statements in Exercises 61-66, write a δ-M,N-ϵ, or N-Mproof, according to the type of limit statement.

limx→318x2=2

Short Answer

Expert verified

limx→318x2=2

Step by step solution

01

Given information

The expression is

limx→318x2=2

02

Calculation

From the limit expression,

f(x)=18x2c=3L=2

Givenε>0,choose δ=min1,ε6.

Then if 0<|x-3|<δ, we have,

18x2-2=18-2x2x2=2|(3-x)(3+x)|x2=2|x-3||x+3|x2<2δ|x+3|x2≤2δ(3)≤ε66=ε

Hence, limx→318x2=2.

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