1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Function machine problem

  1. Aug 18, 2006 #1
    If we have function machine, which change numbers 1,2,4 and 7 like this

    1 --> 4
    2 --> 8
    4 --> 16
    7 --> 28

    How i know simple, what is function, what machine use? :frown:

    ( I don't speak very well english )
  2. jcsd
  3. Aug 18, 2006 #2


    User Avatar

    Staff: Mentor

    From a numerical perspective, it looks like a straightforward scaling of the input number to get the output number (question -- what is the scale factor?).

    From a binary state machine perspective, it looks like a shift left by a constant number of bits. How many bits?
  4. Aug 20, 2006 #3
    Machine? What are you talking about? Specifying a function at only 4 points does not specify the function, but for simple purposes you can consider the function to be a constant multiple of the input.
  5. Aug 22, 2006 #4
    what did you mean by that question? can you please elaborate?
    Last edited: Aug 22, 2006
  6. Aug 22, 2006 #5


    User Avatar

    What about:



  7. Aug 23, 2006 #6
    What lo2 said with a domain of {1,2,4,7}
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook