Results 1 to 5 of 5
Like Tree6Thanks
  • 3 Post By Plato
  • 1 Post By grillage
  • 2 Post By HallsofIvy

Math Help - Dividing powers with the same base

  1. #1
    Senior Member Mukilab's Avatar
    Joined
    Nov 2009
    Posts
    468

    Dividing powers with the same base

    I'm trying to do

    \frac{e^{-3.15x10^{18}}}{e^{-4.9x10^{17}}}

    Can I minus the powers so I get

    e^{-2.66x10^{18}}
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,802
    Thanks
    1691
    Awards
    1

    Re: Dividing powers with the same base

    Quote Originally Posted by Mukilab View Post
    I'm trying to do
    \frac{e^{-3.15x10^{18}}}{e^{-4.9x10^{17}}}
    Can I minus the powers so I get
    e^{-2.66x10^{18}}
    Yes you can. But what is -3.15\cdot 10^{18}+4.9\cdot 10^{17}~?
    Thanks from topsquark, HallsofIvy and Mukilab
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Aug 2012
    From
    Malta
    Posts
    91
    Thanks
    18

    Re: Dividing powers with the same base

    Yes, you can do this.
    Thanks from Mukilab
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor

    Joined
    Apr 2005
    Posts
    16,004
    Thanks
    1657

    Re: Dividing powers with the same base

    Quote Originally Posted by Plato View Post
    Yes you can. But what is -3.15\cdot 10^{18}+4.9\cdot 10^{17}~?
    It is (-31.5+ 4.9)\cdot 10^{17}= -26.6 \cdot 10^{17}= -2.66 \cdot 10^{18} just as Mukilab had!

    (However, Mukilab, "minus" is NOT a verb! Subtract the two.)
    Last edited by HallsofIvy; November 2nd 2013 at 11:51 AM.
    Thanks from topsquark and Mukilab
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Senior Member Mukilab's Avatar
    Joined
    Nov 2009
    Posts
    468

    Re: Dividing powers with the same base

    Quote Originally Posted by HallsofIvy View Post
    It is (-31.5+ 4.9)\cdot 10^{17}= -26.6 \cdot 10^{17}= -2.66 \cdot 10^{18} just as Mukilab had!

    (However, Mukilab, "minus" is NOT a verb! Subtract the two.)
    Haha thanks, I'll keep that in mind.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Determine powers of base 2 from their sum
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: September 1st 2013, 04:11 AM
  2. Replies: 2
    Last Post: April 24th 2010, 07:38 PM
  3. Dividing by powers
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 27th 2009, 10:33 AM
  4. Dividing variables with powers
    Posted in the Algebra Forum
    Replies: 3
    Last Post: March 23rd 2009, 05:28 AM
  5. Dividing powers with the same base?
    Posted in the Algebra Forum
    Replies: 6
    Last Post: November 24th 2008, 03:44 PM

Search Tags


/mathhelpforum @mathhelpforum