In(3x) EXAMPLE 3 Calculate lim SOLUTION Since In(3x) → o and → o as x - o, l'Hospital's Rule applies: 1/x In(3x) lim = lim x- * 3" Notice that the limit on the right side is now indeterminate of type . But instead of applying I'Hospital's Rule a second time as we did in this example we simplify the expression and see that a second application is unnecessary In(3x) lim 1/x = lim 1y-2/3 3 = lim X- 00 X- 00 X- 00

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
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Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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In(3x)
EXAMPLE 3 Calculate lim
X - 00
SOLUTION Since In(3x) → o and
→ o as x - o,
I'Hospital's Rule applies:
1/x
In(3x)
lim
= lim
-2/3
Notice that the limit on the right side is now indeterminate of type .
But
instead of applying l'Hospital's Rule a second time as we did in this example,
we simplify the expression and see that a second application is unnecessary:
In(3x)
lim
1/x
= lim 1,-2/3
x - 00 3
3
= lim
X - 00
X - 00
Transcribed Image Text:In(3x) EXAMPLE 3 Calculate lim X - 00 SOLUTION Since In(3x) → o and → o as x - o, I'Hospital's Rule applies: 1/x In(3x) lim = lim -2/3 Notice that the limit on the right side is now indeterminate of type . But instead of applying l'Hospital's Rule a second time as we did in this example, we simplify the expression and see that a second application is unnecessary: In(3x) lim 1/x = lim 1,-2/3 x - 00 3 3 = lim X - 00 X - 00
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