How can I plot this one?

Hello,

I try to find all the twinprimes in a certain range of numbers. I made a mistake, but a don't know which one. Wjo can help me?

Maybe an easy question, but which command do I have to use to calculate the difference between e and a list of fractions?

Hello,

I try to get the first ten fractions of Pi with the commands "seq" and "nthconver".

I tried this:

a:= cfrac(Pi);
CFRAC([3, 7, 15, 1, 292, 1, 1, 1, 2, 1, 3, ...])
sec(nthconver(a,i),i=1..10);

But it doesn't work.

Who can help me?

Hello,

Does anyone know how to find the repeated part of a fraction. I know the command cfrac, but I have

heard there should be another command which give the repeated part of a fraction as a result.

Who can help me?

 3/11+3*sqrt(3) = [5, 2, 7, 1, 1, 6, 1, 627, 1, 6, 1, 1, 7, 2, 9, 1, 12, 16, 1, 10, 1, 4, 3, 1, 1, 2, 1, 14, 2, 3, 10, 9, 1, 1, 139, 5, 5, 3, 2, 3, 6, 1, 1, 1, 9, 1, 2, 1, 6, 1, 2, `...`]