
Hold & Evaluate
Posted:
Feb 23, 2013 11:31 PM


Dear mathgroup, I would like to generate sequence in the form:
1/1.2, 2/2.3, 3/3.4, 4/4.5, etc.
It is very simple by a Table function:
Table[n/(n + 0.1 (n + 1)), {n, 1, 15}]
but as there are real numbers in denominators, Mathematica evaluates all an= d generates something like:
{0.833333, 0.869565, 0.882353, 0.888889, 0.892857, 0.895522, etc.}
How to evaluate numerators and denominators separately and print the sequen= ce in that "fraction like" form?
I tested:
#[[1]]/#[[2]] & /@ Table[{n, n + 0.1 (n + 1)}, {n, 1, 15}] and than used Ho= ld[] and Evaluate[]:
Hold[Evaluate[#[[1]]]/Evaluate[#[[2]]]] & /@ Table[{n, n + 0.1 (n + 1)}, {n, 1, 15}]
But it doesn't work as the Hold has "veto" power over any evaluation.
Thanks in advance for any idea, how to do it
Jakub

