Write a function that calculates the ratio between the sum of the prime numbers lower or equal than x, and the sum of the non-prime numbers lower than x.
Count up then down
Sum of the Matrix Elements
Reverse a string
Find the maxmum value of N*N Matrix
Calculate the number of elements in a matrix.
Check if is a square
Get the value 100
Ratio between sum of primes and sum of factors
Approximate the inverse tangent by power series
Sum of a geometric series
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office