1. Jan 23, 2008

### rcmango

1. The problem statement, all variables and given/known data

I'm attached a pic of an example.

just wondering when i was trying the ratio test with a problem, i noticed numbers displayed in the pic.

is another way to write those examples like this: 5*5 or (x-1)*(x-1) ?

is that all the n+1 means?

also if there was something like: (n^7) / (n+1)^7 how can those cancel?

thanks

2. Relevant equations

3. The attempt at a solution

Last edited: Jan 24, 2008
2. Jan 24, 2008

### rcmango

nevermind.

3. Jan 24, 2008

### danni7070

$$\frac{n^7}{(n+1)^7}$$ behaves like $$\frac{n^7}{n^7}$$ for large n

so in your example it's just 1 if the limit goes to infinity. Can you see it?