Quick problem; can't find other solution

  • Context: Graduate 
  • Thread starter Thread starter ayae
  • Start date Start date
Click For Summary
SUMMARY

The discussion centers on solving the equation a = e^-t t^x, which is expected to have two real solutions between 0 and e^-x x^x. One solution has been identified as t = -x ProductLog[-(a^((1/x))/x)], utilizing the Lambert-W function, also known as the Product Log. The challenge lies in determining the second solution, which is related to the multivalued nature of the Lambert-W function and its branches for real-valued arguments.

PREREQUISITES
  • Understanding of the Lambert-W function (Product Log)
  • Familiarity with exponential equations
  • Knowledge of real-valued functions and their branches
  • Basic calculus concepts related to solving equations
NEXT STEPS
  • Research the properties and branches of the Lambert-W function
  • Study methods for solving exponential equations
  • Explore numerical methods for finding additional solutions
  • Learn about applications of the Lambert-W function in real-world problems
USEFUL FOR

Mathematicians, students studying advanced calculus, and anyone interested in solving complex exponential equations using the Lambert-W function.

ayae
Messages
20
Reaction score
0
I'll make this quick guys:
a = e^-t t^x
This equation should have 2 solutions real between 0 and e^-x x^x
I've found one solution to the equation:
t = -x ProductLog[-(a^((1/x))/x)]
But I can't find the other :(. Please can you give me a hand finding the other solution.
 
Mathematics news on Phys.org
The "Product Log", or Lambert-W function, is multivalued, so you have to choose a branch. For real valued arguments there are two branches; I would suppose this is your what your second solution is.
 

Similar threads

  • · Replies 21 ·
Replies
21
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 0 ·
Replies
0
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 16 ·
Replies
16
Views
5K
  • · Replies 15 ·
Replies
15
Views
3K