Posted by amy on Tuesday, March 15, 2011 at 6:58pm.
find the nth derivative of 2/(x+1)

calculus  bobpursley, Tuesday, March 15, 2011 at 7:10pm
n=1; f'=2/(x+1)^2
n=2; f"=2*2/(x+1)^3
nth = (2)^n * 1/(x+1)^(n+1)
check that. 
calculus  amy, Tuesday, March 15, 2011 at 8:07pm
that is only true for the first three.