FunkyDwarf
Jun5-07, 07:32 AM
Hey guys
This isnt related to a particular question but i thought might be too specific for the general forum so here we go...
If you have a function f(x,y) such that u = f(x) and v= g(x) and you have some transformation T(u,v) i know you can find the inverse by getting x and y in terms of u and v and getting the Jacobian matrix etc. BUT if you can't (or like me too lazy/stupid) to be able to find f-1 or g-1 then is there a shortcut? I ask this knowing half the answer: i remembe there being a relation between the jacobian for a transform and its inverse but i dont know what it is.
The reason i ask the rest of the shpeel before it is to make sure im understanding that correctly as well.
Thanks
-G
This isnt related to a particular question but i thought might be too specific for the general forum so here we go...
If you have a function f(x,y) such that u = f(x) and v= g(x) and you have some transformation T(u,v) i know you can find the inverse by getting x and y in terms of u and v and getting the Jacobian matrix etc. BUT if you can't (or like me too lazy/stupid) to be able to find f-1 or g-1 then is there a shortcut? I ask this knowing half the answer: i remembe there being a relation between the jacobian for a transform and its inverse but i dont know what it is.
The reason i ask the rest of the shpeel before it is to make sure im understanding that correctly as well.
Thanks
-G