Using Comparison test and LCT, determine whether it is convergent or divergent:
(summation n=1 to infinity) sqrt(n+2)/(2n^2+n+1)
The Attempt at a Solution
i compared it with sqrt(x)/2n^2 which is 1/2n^(3/2)
and then the answer showed something weird...they had to plug in a number (e.g. 1) which reversed the inequality sign... to sqrt(n+2)/(2n^2+n+1) is larger than 1/2n^(3/2)...does anyone know why?