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

Partial differential - difference of opinion

  1. Sep 23, 2014 #1
    I have a difference of opinion with 2 calculation engines.

    equation to solve is;
    d/dx (a(x^2 +y)

    Wolframalpha of course is a very trusted source but I also use symbolab.
    Here is a screenshot of the differential I want from both sites and associated answers.

    partial diff symbolab.JPG

    . . . and the wolfram solution

    partial diff wolfram.JPG

    could anyone please confirm which is correct.
    Personally I like the symbolab solution.
  2. jcsd
  3. Sep 23, 2014 #2


    User Avatar
    Gold Member

    The point is, wolfram assumed you mean a is a function and its argument is [itex] x^2+y [/itex]. You should have written a*(x^2+y).
  4. Sep 23, 2014 #3
    oops sorry. Just me being lazy
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook