Cody Problem 59841 involved counting the ways that 
can be written as the sum of two unit fractions (those with a numerator of 1). For example, the number 1/2 can be written as 1/3+1/6 and 1/4+1/4, and the number 1/9 can be written as 1/18+1/18, 1/12+1/36, and 1/10+1/90.
can be written as the sum of two unit fractions (those with a numerator of 1). For example, the number 1/2 can be written as 1/3+1/6 and 1/4+1/4, and the number 1/9 can be written as 1/18+1/18, 1/12+1/36, and 1/10+1/90. Write a function to list the ways can be written as the sum of two unit fractions. The output should be a two-column matrix of the denominator pairs with the smaller denominator in the first column and the larger in the second. The values in the first column should be sorted in increasing order. For example, if n = 9, then the output should be [10 90; 12 36; 18 18].
can be written as the sum of two unit fractions. The output should be a two-column matrix of the denominator pairs with the smaller denominator in the first column and the larger in the second. The values in the first column should be sorted in increasing order. For example, if n = 9, then the output should be [10 90; 12 36; 18 18].Solution Stats
Solution Comments
Show comments
Loading...
Problem Recent Solvers9
Suggested Problems
-
1717 Solvers
-
246 Solvers
-
Circular Primes (based on Project Euler, problem 35)
655 Solvers
-
Replace multiples of 5 with NaN
470 Solvers
-
Create matrix of replicated elements
399 Solvers
More from this Author328
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
