Plotting functions

[John Hilton]

Hi,

 

I would like to be able to take a function in the form

 

f1(a, b, c) = 0

 

and plot a graph of 'a' vs 'b' with 'c' being constant.

This is easily done if the equation form is manually changed first to

 

 b = f2(a)

 

but I would like to get Octave to sort out the details if possible

(numerical solutions are fine, I don't care about handling the situation where multiple solutions exist)

 

Is there an easy way of getting octave to do this?

 

bye

John