Recent content by scn7th

I have googled Grobner basis and found it useful in solving polynomial equations.Besides, I have also found Wu's method,which seems to be more proper to my euqations.thanks a lot for your hint!

Your method is just another good way to solve it by hand.Actually,my project is to solve a large set of equations with many variables and I have take the 4-variable set of equations as a simple example.I believe I have found the algerithms though they is not effectvie in my case,which are Wu's...

Curious3141,thank u for ur detailed analysis.Indeed, I want to find algerithm to solve it by computer.I have got one algerithm but I don't know whether it is better than ES method.Here it is: transform the set of equations into the following form: a(c-cd-bd-2bc+2bcd)+cd+bd+bc-bcd-d-c=0...(5)...

yes it does a good job.I'll try to figure out how it work and reply it to u as soon as I get sth new.my email address is scn7th@163.com. many thanks.

thank u man .I have seen that website and it has got the answer.would u please tell me your method to sovle it?Is there any effective algerithm except the exhaustive search? looking forward to ur reply.

yes there are 16 sets of solutions.it is not hard to get the answer by exhaustive search method.But I'm tring to find an algerithm which is more effective than ES method.have u got any other way to solve it? What's more,thank u for ur help

we assume a,b,c,d are unknown variables,whose solution are either 0 or 1.So a power of a variable equals to itself(e.g,a^(n)=a).Would u please help me find a proper way to sovle the following simultaneous equations whose solutions are either 0 or 1...