AtomicMX Posted June 15, 2004 Share Posted June 15, 2004 Which solving method do you use? and Which ones do you know? A mexican invented one method named DGO but i want to know if you know it already, because if not, i can explain it here. Link to comment Share on other sites More sharing options...
jgerlica Posted June 15, 2004 Share Posted June 15, 2004 Cramer's rule Link to comment Share on other sites More sharing options...
AtomicMX Posted June 15, 2004 Author Share Posted June 15, 2004 That's for determinants isn't it? Link to comment Share on other sites More sharing options...
jgerlica Posted June 15, 2004 Share Posted June 15, 2004 that it would. Link to comment Share on other sites More sharing options...
bloodhound Posted June 15, 2004 Share Posted June 15, 2004 cramer's rule is good for theroretical consideration, but its pretty useless for computation of solutions of a large system of equations. I prefer gauss-jordan elimination , and back substitution. also to find inverses of matices for 3by 3 or larger use row operations as it much quicker and that determinant - adjugate way. Also to find the determinant of a matrix laarger than 3by 3 matrix its generally quicker to use row and column operations of transform the matrix into any diagonal form. then the determinant can be quicked determined by computing the product of the diogonal entries. Link to comment Share on other sites More sharing options...
fourier jr Posted June 15, 2004 Share Posted June 15, 2004 Which solving method do you use?and Which ones do you know? A mexican invented one method named DGO but i want to know if you know it already' date=' because if not, i can explain it here. [/quote'] never heard of DGO, lay it on me! Link to comment Share on other sites More sharing options...
bh_doc Posted June 15, 2004 Share Posted June 15, 2004 Good ol' Gaussian. Though I haven't had to deal with particularly complex matrices. Link to comment Share on other sites More sharing options...
bloodhound Posted June 15, 2004 Share Posted June 15, 2004 i dont seem to know DGO either. pls go for it Link to comment Share on other sites More sharing options...
jordan Posted June 15, 2004 Share Posted June 15, 2004 I prefer gauss-jordan elimination Please, no more. They stole my name and then made a horrible method out of it. Really, of all the methods for solving systems, this is my least favorite. And you can mark one more vote in the "haven't heard of DGO" column. Link to comment Share on other sites More sharing options...
Dave Posted June 15, 2004 Share Posted June 15, 2004 Go go Gaussian elimination Link to comment Share on other sites More sharing options...
bloodhound Posted June 15, 2004 Share Posted June 15, 2004 Please' date=' no more. They stole my name and then made a horrible method out of it. Really, of all the methods for solving systems, this is my least favorite. And you can mark one more vote in the "haven't heard of DGO" column.[/quote'] so what do u normally use to solve a system of 10 equations with 10 variables. Link to comment Share on other sites More sharing options...
jordan Posted June 16, 2004 Share Posted June 16, 2004 Really, there is no set name for what I use. My teachers all hate it, but I find visualization a whole lot easier than anything else. I move through steps that no one else seems to follow, occasionaly scribble a few things down, and after coming up with a preliminary answer for one variable, substituting it back in to the others. No, it doesn't always work on the first try, but I find it much easier than trying to add three times row 5 to four times row two with the hopes of making everthing zeros. Though I've never tried ten, it seems like both methods would become increasingly difficult with increasing variables. Link to comment Share on other sites More sharing options...
Dave Posted June 16, 2004 Share Posted June 16, 2004 To be fair, you're not going to use anything to do 10 variables by hand because there's simply no point. You just bung it into something like Mathematica and a good half hour's work is done in about a minute. I'm a firm believer in using a method that suits you. If it's good for you (and it's mathematically sound) then by all means go for it Link to comment Share on other sites More sharing options...
bloodhound Posted June 16, 2004 Share Posted June 16, 2004 ill just stick to maple Link to comment Share on other sites More sharing options...
Dave Posted June 16, 2004 Share Posted June 16, 2004 ack, maple Mathematica > All Link to comment Share on other sites More sharing options...
bloodhound Posted June 16, 2004 Share Posted June 16, 2004 never tried mathmatica, will have a go at it afterwards. Link to comment Share on other sites More sharing options...
jordan Posted June 16, 2004 Share Posted June 16, 2004 I'm a firm believer in using a method that suits you. If it's good for you (and it's mathematically sound) then by all means go for it My teachers never seems to go for that. They think their way is the only way. By the way, how are we defining "mathematically sound"? Link to comment Share on other sites More sharing options...
Dave Posted June 17, 2004 Share Posted June 17, 2004 If you've got some strange method that you use, be it a completely different method or an adaptation of the method, then it should be able to be proved mathematically - i.e. mathematically sound. Link to comment Share on other sites More sharing options...
jordan Posted June 17, 2004 Share Posted June 17, 2004 Then I guess it would work. The problem they have is that I go through the steps too quick in my head to write them all down. If I stop and work eveything out on paper, I forget where I was going and have to start over. Then they say I cheat somehow to get the answer or I'm just lazy. I can't win. Sorry to drift so far off topic, but until AtomicMX explains what the DGO method is, I don't have much else to say. Link to comment Share on other sites More sharing options...
AtomicMX Posted June 17, 2004 Author Share Posted June 17, 2004 Yeah i am sorry too, i am finishing the semester in my university and the things are quite hard, and i am going to make a Flash movie to explain you all the DGO solving method. Link to comment Share on other sites More sharing options...
jordan Posted June 17, 2004 Share Posted June 17, 2004 Sounds good. Link to comment Share on other sites More sharing options...
fourier jr Posted June 18, 2004 Share Posted June 18, 2004 Yeah i am sorry too, i am finishing the semester in my university and the things are quite hard, and i am going to make a Flash movie to explain you all the DGO solving method. yeah sounds good. i'm sure it will be worth bookmarking, especially if i'm the only math person i know who knows about it. we only ever learn the usual stuff at my school. Link to comment Share on other sites More sharing options...
bloodhound Posted June 18, 2004 Share Posted June 18, 2004 what does DGO stand for anyway Link to comment Share on other sites More sharing options...
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