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Plotting the graph of y=1/log|x|

  1. Jul 11, 2011 #1
    I was just wondering as to how I can plot the graph of y=1/log|x| without putting a lot of values of x and obtaining corresponding values of y.
    I mean, how can I draw this graph using the graph of y=log x or the graph of log|x|? Is there a way?
  2. jcsd
  3. Jul 12, 2011 #2
    There are a lot of tools available to let you help you plot the function. Here are some things you can do:

    • Find the asymptotes.
    • Find out if the function is even/odd/none
    • Find the roots of the function.
    • Find the first derivative and see where the function is increasing/decreasing. Find the extremal points.
    • Find the second derivative and see where to function is concave/convex.

    This information will help you make an accurate drawing of the function.
  4. Jul 12, 2011 #3
    Suppose you work out the graph, using sample points, of the function for positive values of x. Is there some way you would automatically know what the graph looks like for negative values of x?
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