```Date: Apr 4, 2008 6:37 PM
Author: Wouter Geelen
Subject: Re: Solving equation

roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson) wrote in message <ft694d\$5ki\$1@canopus.cc.umanitoba.ca>...> In article <ft67km\$agj\$1@fred.mathworks.com>,> Wouter Geelen <wouser_geelen@hotmail.com> wrote:> > >I tried to do this myself but I can't get it done. I got > >the following equation.> > >Ti = -1200*exp(-1/7200*t)+1200> > >Now I want to solve this function for Ti = 1080. So what I > >want to find is t. How do I do that :?> > Ti = -1200*exp(-1/7200*t)+1200, so> Ti - 1200 = -1200 * exp(-t/7200), so> (1200 - Ti)/1200 = exp(-t/7200), so> ln((1200 - Ti)/1200) = -t/7200, so> -ln(1200/(1200-Ti)) = -t/7200, so> t = 7200 * ln(1200/(1200-Ti))> > Substituting in Ti = 1080, we get the result 7200 * ln(10)> which is about 16578.61267.> > -- >   "Is there any thing whereof it may be said, See, this is new? It hath>   been already of old time, which was before us."    -- EcclesiastesHahahaha yeah I know it can be done by algabra I already did myself lol but how do I this in matlab? Ain't there a function solve equation for paramater x?!? Or something like maple has?
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