Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Solving limits (https://www.askmehelpdesk.com/showthread.php?t=93942)

  • May 18, 2007, 05:13 PM
    bchow
    solving limits
    hey can someone help me out with this limit

    lim (n*19^n) / (20^n)
    n->∞


    thanks
  • May 18, 2007, 05:49 PM
    galactus
    You can use the ratio test to test convergence.





    The limit is < 1, therefore, it converges. But to what? Just look at the denominator, that should tell you something; It's larger than the numerator. Plug in some larger and larger values. What does it approach?

    Try rewriting it as .

    See what the limit is now?

    This problem would be more interesting of you had to find the sum of the series.

  • All times are GMT -7. The time now is 06:13 AM.