- #1
SamJay
- 3
- 0
Hey guys. I'm a little new on the comparison test, if you could just check that I'm on the right track, it would be great.
Using comparison test to decide whether or not [tex]\frac{\sqrt{x}}{\ln{x} + x^2}[/tex] converges.
(Check 3.)
Okay, so first off, I guess that this converges. So find a function that is larger than the one that is given and test if that converges, yes?
Would: [tex]\frac{\sqrt{x}}{\ln{x} + x^2} < \frac{\sqrt{x}}{x^2}[/tex] be a good choice?
So would I be right in saying that as [tex]x^{-3/2}[/tex] converges, that also the one given converges?
I'm not sure if I've gotten this backwards or not. Could someone please clear it up for me?
Thanks.
Homework Statement
Using comparison test to decide whether or not [tex]\frac{\sqrt{x}}{\ln{x} + x^2}[/tex] converges.
Homework Equations
(Check 3.)
The Attempt at a Solution
Okay, so first off, I guess that this converges. So find a function that is larger than the one that is given and test if that converges, yes?
Would: [tex]\frac{\sqrt{x}}{\ln{x} + x^2} < \frac{\sqrt{x}}{x^2}[/tex] be a good choice?
So would I be right in saying that as [tex]x^{-3/2}[/tex] converges, that also the one given converges?
I'm not sure if I've gotten this backwards or not. Could someone please clear it up for me?
Thanks.