I'm trying to get my TI-89 to do a series for me. The series is from n to infinity of ln(x)/x. When I put that in, it's spitting out what I put in.
What am I doing wrong? Exactly entered as summation(ln(x)/x,x,2,infinity)
Edit: I know it diverges by the integral test. I'm using my TI-89 as a check and I've had this problem with convergent series before until I modified my index, but it's getting to be a nuisance.
summation(ln(x)/x,x,2,infinity) ; - Wolfram|Alpha
The problem with CAS calculators is that they are misnamed. They should be called Wannabe-CAS calculators.