MathGroup Archive 1995

[Date Index] [Thread Index] [Author Index]

Search the Archive

What's this Mathematica function called?

  • Subject: [mg934] What's this Mathematica function called?
  • From: martind at (D<martind at>M)
  • Date: Wed, 3 May 1995 00:13:19 -0400
  • Apparently-to: mathgroup-send at
  • Organization: Carleton College -- Northfield, MN

First let me apologize for what I'm pretty certain is a question that I could
find if only I searched through the big black book long enough.  However, I am
unable to find an answer anywhere in the index, so I'll ask it here.

What is Mathematica function that determines if one expression depends on
another?  i.e. if this function were called Depends, it would give output
something like this:

Depends[x + 3, x]
==> True
Depends[y, x]
==> False
y := x^2
Depends[y, x]
==> True
Depends[f[g[x]], x]
==> True
Depends[f[g[y]], x]
==> True
Clear[y]; Depends[f[g[y]], x]
==> False

I seem to remember running across it at some point, but I'm unable to find it

Daniel Martin
martind at

  • Prev by Date: Challenge! ....RESULTS...
  • Next by Date: Kolmogorov-Smirnov Statistics
  • Previous by thread: Re: Challenge! ....RESULTS...
  • Next by thread: Re: What's this Mathematica function called?