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I am trying to write a short matlab program that plots concentration vs distance (oxygen sag curve from two different bod sources in a river). I know the equation im using is:

C= Cs - [(kd*Mo)*(exp(-x*kr/u)-exp(-x*ka/u))/(Q*ka-kr)] - (Cs-Co)*exp(-x*ka/u) - [(kd*Mo)*(exp(-(x-L)*kr/u)-exp(-(x-L)*ka/u))/(Q*ka-kr)].

Its very long and im having trouble getting it to work in matlab form.

Can someone used to matlab give me some hints how to make this work?

I know how to execute a plot by plot(x,C) but the equation is giving me trouble.

Any help would be greatly appreciated.

Thanks.

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# Basic matlab help with plotting

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