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.
test case #2 is not correct.
Back to basics 8 - Matrix Diagonals
Sum of diagonal of a square matrix
Length of a short side
Summation of array
Sum of a geometric series
Ratio between sum of primes and sum of factors
Alternating 1´s and 0´s in a matrix
Approximate the inverse tangent by power series
Get the value 100
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