Finding the Limit of (cos(Pi/2x))^2x when x is ∞

  • Thread starter Thread starter Frank Einstein
  • Start date Start date
  • Tags Tags
    Limit
Click For Summary
SUMMARY

The limit of (cos(π/2x))^(2x) as x approaches infinity converges to e^0, which equals 1. The discussion highlights the importance of understanding the behavior of the cosine function as its argument approaches zero. It emphasizes evaluating the limit by substituting large values for x and recognizing that cos(0) equals 1. The community suggests showing work to facilitate further assistance in solving the limit problem.

PREREQUISITES
  • Understanding of limits in calculus
  • Familiarity with the behavior of trigonometric functions
  • Knowledge of exponential functions and their properties
  • Basic algebraic manipulation skills
NEXT STEPS
  • Study the properties of limits involving trigonometric functions
  • Learn about the application of L'Hôpital's Rule for indeterminate forms
  • Explore the concept of continuity in relation to limits
  • Investigate the behavior of exponential functions as their exponent approaches zero
USEFUL FOR

Students studying calculus, particularly those tackling limits involving trigonometric and exponential functions, as well as educators seeking to clarify these concepts for learners.

Frank Einstein
Messages
166
Reaction score
1
Member warned about posting homework with no effort

Homework Statement



I have a problem, I don't know how to find the limit (cos(Pi/2x))^2x when x is ∞

Homework Equations



(1+(1/x))^(1/x)=e

The Attempt at a Solution


I have been looking for solutions on the internet, but most of these just tend to be for fractions, I don't know how to operate with a cosine.
Any help?
 
Physics news on Phys.org
Have you tried inserting numbers like x as 1,10,100... To see how the formula trends that might give you an idea of what happens as x gets larger?

Do you know the value of cos(0) or cos(PI/2) ?

You need to show us some work before we can help further.
 

Similar threads

  • · Replies 25 ·
Replies
25
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K
Replies
8
Views
5K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
8
Views
2K