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

Y=f(x) to z=f(x,y) ? Help

  1. Aug 13, 2008 #1
    y=f(x) to z=f(x,y) ???? Help

    My question is :

    when z=f(x,y) is written down ...

    it's assume that we're working in the cartesian plane with z on the

    vertical axis, x and y on the horizontal right?

    And they're not going to mix that around on me unless otherwise


    So I can associate the variables x and y and z in my head --as

    meaning the x y and z coordinate respectively ...and theyren not

    going to have x be the 'y' coordinate on the graph and x be the 'z'


    z=f(x,y) is the y=f(x) of 2 variables?
  2. jcsd
  3. Aug 14, 2008 #2


    User Avatar
    Homework Helper

    Re: y=f(x) to z=f(x,y) ???? Help

    Yes, that's usually how it's pictured.

    If it's expressed in the form z=f(x,y), you can think of z graph as being height function of the solid.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook