Question

Calculus:
Determine convergence or divergence using the ratio test for the series:

2^n(2n)!/(2n!)

Answer 1

=lim of (\[2^{n+1}(2n+2)! / 2 (n+1)! * 2 n! / 2^{n} (2n)!\])
=lim of(8n+4)
= inf >1 thus diverges