Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Hi, pls help with basic maths

  1. May 12, 2004 #1
    Hi, I'm sorry if this is a really dumb question...

    how do you compute 10E4.2 on the calculator?

    thanks in advance..
    cseet
     
  2. jcsd
  3. May 12, 2004 #2

    enigma

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    10 x 10^4.2
     
  4. May 13, 2004 #3
    thanks enigma... I know it's a "silly" question.... but appreciate it! cseet
     
  5. May 13, 2004 #4
    notational questions are never silly. Lots of people get completely lost - not because they dont understand - but simply because they have never been taught the notation (happened to me many a time).
     
  6. May 14, 2004 #5

    HallsofIvy

    User Avatar
    Science Advisor

    Unfortunately, Enigma's answer seems to me to be wrong. The question was
    to compute "10E4.2", i.e. "10 to the exponent 4.2" and should be 10^(4.2), NOT
    "10*10^(4.2)".
     
  7. May 14, 2004 #6

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    Usually in exponent notation xEy = x * 10^y.
     
  8. May 15, 2004 #7

    enigma

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    1e1 is 10.
    2e2 is 200.
    10e4.2 is 158489.319...

    Halls, you're thinking of
    10^4.2

    not

    10E4.2
     
    Last edited: May 15, 2004
  9. May 21, 2004 #8
    yes on the calculators "E represents times 10 to the"
    so 10E4.2
    10 "time 10 to the" 4.2
    just inser the phrase wherever e is
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook