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: Drawing graph of functions HELP

  1. Jun 1, 2010 #1
    drawing graph of functions...HELP!!

    ok, i am going to admit i am TERRIBLE when it comes to drawing graphs of functions. I have no idea what i am doing and kind of need a step by step approach. I really want to learn the best way of doing this as its now a big obstacle in my course.

    The question i have is basically plot a graph of the function y=fr(x)
    Im told that fr(x)=1.5/sin(x)
    the domain is (0,1/2*[tex]\pi[/tex])

    I already have an answer of what the graph SHOULD look like but am having trouble getting together a table of values to draw it with for myself. I have tried on my calculator but it keeps giving me a parallel line of y=1.5 (if that makes sense)
    i know i must be putting it in wrong

    HELP....!!
     
  2. jcsd
  3. Jun 1, 2010 #2

    HallsofIvy

    User Avatar
    Science Advisor

    Re: drawing graph of functions...HELP!!

    What values are you putting in for x? Is your calculator in radian mode?
     
  4. Jun 1, 2010 #3
    Re: drawing graph of functions...HELP!!

    ive been putting in 1/2*pi for x.....yes it is in radians
     
  5. Jun 1, 2010 #4

    HallsofIvy

    User Avatar
    Science Advisor

    Re: drawing graph of functions...HELP!!

    Well, if you always put in the same x, you will always get out the same y!

    Put in a number of different values for x between 0 and [itex](1/2)\pi[/itex].
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook