Question regarding Mean Value Theorem.

Click For Summary
SUMMARY

The discussion centers on applying the Mean Value Theorem (MVT) to demonstrate that ln(1+x) < x for x > 0. The user references the formula f'(c) = (f(b) - f(a)) / (b - a) as a method to approach the problem. They are uncertain about how to define the interval [a, b] for their specific case and suggest using the interval [0, c] where c > 0 to facilitate their calculations.

PREREQUISITES
  • Understanding of the Mean Value Theorem in calculus.
  • Familiarity with natural logarithmic functions, specifically ln(x).
  • Basic knowledge of derivatives and their applications.
  • Ability to define and work with intervals in mathematical analysis.
NEXT STEPS
  • Study the Mean Value Theorem and its applications in proving inequalities.
  • Learn about the properties of the natural logarithm function, particularly ln(1+x).
  • Explore derivative calculations and their implications for function behavior.
  • Investigate examples of using intervals in calculus proofs.
USEFUL FOR

Students studying calculus, particularly those focusing on the Mean Value Theorem and inequalities involving logarithmic functions.

charmedbeauty
Messages
266
Reaction score
0

Homework Statement



By using mean value theorem , show that

ln(1+x)<x whenever x>0




Homework Equations





The Attempt at a Solution



So there is another example in my book and they just use the formula

f ' (c) = f(b)-f(a) / b-a

but I am not sure how to work out my [a,b] interval.

any ideas?
 
Physics news on Phys.org
Work on the interval [0,c] where c>0.
 

Similar threads

  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 14 ·
Replies
14
Views
3K
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K