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Re: [Phys-l] Trying to resolve algebraic equation : the variable is t



Plotting both sides of the equation you gave over the range of t with the values given for
A b c r I didn't see a crossing....

BrianW

Bob Sciamanda wrote:
Brian,
I used Mathcad to plot - no problem.
What did you use, and what did you see?

Bob Sciamanda
Physics, Edinboro Univ of PA (Em)
treborsci@verizon.net
http://mysite.verizon.net/res12merh/

On May 11, 2009, Brian Whatcott <betwys1@sbcglobal.net> wrote:
Bob wrote:
Write your equation as:

A*exp(-r/t) = (b*t-c)/(1-b*t+c)

Choose the constants and Plot each side on the same graph.

Example: Choose A= -2, b=0.2, c=1, r=1 and plot from t=-20 to t=20, avoiding the singularities at t=0and t=10.

Three points of intersection appear, but beware of intersections at singularities.

Bob Sciamanda
I was unable to see the solutions in this parameter space.

Brian W