Hi, I could really do with a little advice on the second part of ps1. I am a graduate art student and my maths isn't too good. Due to this I'm not sure whether I'm handling the logarithm function in the right way.

Every time I find a prime I add it to an empty var:
logs = logs + math.log(primecand)

Then I attempt to figure out the ratio between the logs and the number specified:

if logs

Question

Hi, I could really do with a little advice on the second part of ps1. I am a graduate art student and my maths isn't too good. Due to this I'm not sure whether I'm handling the logarithm function in the right way.

Every time I find a prime I add it to an empty var:
logs = logs + math.log(primecand)

Then I attempt to figure out the ratio between the logs and the number specified:

if logs < primecount:
        ratio = primecount / logs
    else:
        ratio = logs / primecount
    print logs, primecount - 1, ratio

Can anyone tell me if I've got the right end of the stick here?

Thanks!

anonymous · Answer

you don't need the if/else statement - you are only interested in one ratio.  the ratio you are interested in is: 
(sum of the logarithms of primes less than n) to n 
or 
(sum of the logarithms of primes less than n) / n