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Thank-you Rodger for this. As ever in mathematics there is more than one way of doing things, and I had forgot the matrix approa...

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Responded 2 years ago

Hi Bruno You are right about this not being standard technique. But remember that the conic stuff is one of possibly multiple m...

If instead of you solve for A, B, and C in those three equations will fall out very readily. Hi Roger Thanks once again f...

Hi Rodger Regarding your statement Your remark about the parabola reminded me I should have been thinking about un-rotated co...

Roger thanks again for this clarification, I will take a look through this at the weekend and get back to you next week. As some...

Hi Rodger Thanks again for your helpful response. I see now the use of K - I forgot the important fact that sin(a+b) and cos(a+...

Hi Rodger Thank-you for the above explanation of your Matlab code, which works perfectly. I have managed to use it to find solu...

Thanks for the clarification Roger. I will see what types of solutions your code throws up. Since degenerate conics are central ...

Roger thanks very much for confirming my summary is OK, and thanks for showing me the contradiction in the hyperbolic case. A ve...

Thanks again for this clarification Rodger. I can now see the steps needed in order to derive the equations y2/x2*y3/x3=(-b^2/...

Many thanks Bruno for your help. I had forgotten the linear-algebra take on this problem, much neater and compact.

Hi Roger Thanks for the above response. I can now derive these equations using the standard trig identities - easy when you kno...

Hello Roger Thanks very much for your code you posted earlier - I will try and use it to find some numerical solutions to my eq...

Sorry I have not replied sooner Roger. Thanks for your earlier reply, and thank-you for this code. I am still trying to familiar...

Firstly Roger thank-you so much for spending time on my question, your answer is absolutley superb in terms of bringing some geo...

Responded 3 years ago

Dear Users I have a system of 24 multi-variable polynomials (of order 2) in either 28 or 12 unknowns depending on how I view ...

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Asked 3 years ago

Dear Users I have a system of 24 multi-variable polynomials (of order 2) in either 28 or 12 unknowns depending on how I view my...

Posted 3 years ago

Dear Users The title says it all really. I am using SOLVE to solve a system of 12 equations with 12 unknown variables. My unk...