Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'solving two equalities with one variable' topicStudent Support Forum > General > Archives > "solving two equalities with one variable"

Next Comment >Help | Reply To Topic
Author Comment/Response
Ampi
05/20/08 05:38am

This should be easy but somehow I can't get it to work.

I have two functions (f and g). Both depend on x and four other parameters (alpha, beta, gamma and delta).
I am interested in the points where
f=g and f'=g'.
I need the value of x and delta in that point (there are two of these points).

I have tried different things. One of them being first equating f=g, and then plugging the outcome one by one in the equality f'=g', but still that doesn't work, especially when I go numerical (I need both the 'big' analytical outcome and the numerical one).

In case necessary, here are my functions:
f[x_] := 1 + \[Alpha] x - \[Beta] x - \[Alpha] \[Beta] x^2
g[x_] := x/(\[Delta] (1 + \[Alpha] x)) - \[Gamma]/\[Delta]


URL: ,

Subject (listing for 'solving two equalities with one variable')
Author Date Posted
solving two equalities with one variable Ampi 05/20/08 05:38am
Re: solving two equalities with one variable Randy Silvers 05/26/08 02:59am
Next Comment >Help | Reply To Topic