Write a function that calculates the ratio between the sum of primes numbers lower or equal to x, and the sum of the factors of x.
The 3rd test case, for x = 100; is wrong. Please correct it.
Done! thank you!
Test Suite problem #3 has an incorrect value for y_correct.
Remove any row in which a NaN appears
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Double the next!
Approximate the inverse tangent by power series
Sum of a geometric series
Ratio between sum of primer numbers and non-prime numbers
Check if is a square
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