
Re: changing variable in an equation
Posted:
Feb 12, 2011 5:18 AM


I am guessing that each x in your equation is intended to represent multiplication. You are also missing a parenthesis which I put at the end but may have to be moved.
v[a_, t_] = 67 + (a  (67) E^(19 t)/10);
Plot[ Evaluate[ Table[ Tooltip[v[a, t], a], {a, 100, 100, 10}]], {t, 0, 5}, Frame > True, Axes > False]
Plot3D[v[a, t], {t, 0, 5}, {a, 100, 100}]
Bob Hanlon
 J and B <noslowski@comcast.net> wrote:
============= Below is an equation that I am working on. I know there is some way to work it out better than what I am doing. I would like the variable a to change in increments of 10, from 100 to 100. Thanks my main equation is: v = 67+(a(67) x E ^ (19 x t)/10 what I am doing: v1= 67+(0(67) x E ^ (19 x t)/10; v2= 67+(10(67) x E ^ (19 x t)/10; v3= 67+(20(67) x E ^ (19 x t)/10; and so on and working from 100 to 100 Then I use Plot [ { v1,v2, v3 ........},{t,0,5}, PlotRange > All] Please note that I have added some spaces in to make it more readable. thanks Jake

