having trouble finding limits of series,
I'm able to use ratio test/root test /integral test when told to but when presented with a series that doesn't seem to require one of these test i'm lost,
SUM(form n=1 --> n=inf) 1/((4n-3).(4n+1)),
im not sure if i need to use a test here or some other way, i tried using the ratio test but it came out to be =1 so inconclusive.
Any guidance here would be greatly appreciated,
Cheers.