
#1
Feb1406, 05:46 AM

P: 139

i will express some function y as follows as its ordinary derivative
dy/dt=y (can i say like thisthe change in y value with respect to change in t value at the point t will be equal to the y value at t) Can somebody explain a partial derivative like the above statement What is so special in a partial differential equation that it requires so many methods as follows. What is the difficulty that makes the ode and pde different in their solution 1)fem 2)bem 3)fdm 4)fvm 



#2
Feb1906, 11:56 PM

P: 4

don't mind but what do u'r short forms , viz
1)fem 2)bem 3)fdm 4)fvm mean??? 



#3
Feb2206, 12:38 PM

Sci Advisor
HW Helper
PF Gold
P: 12,016

I would hazard:
1) Finite element method 2) ? 3) Finite differences method 4) Finite volume method These are all NUMERICAL methods, none of them are "required", but options that have shown themselves handy in solving diff.eqs. 



#4
Apr2006, 04:30 PM

P: 2

ode and pdethe major difference
Ordinary Differential Equations are equations that involve solutions of functions of single variables.
Therefore, f(x) etc.... Partial Differential Equations are equations that involve solutions of functions of multiple variables. So for instance f(x,y) 



#5
Apr2006, 07:14 PM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,879

bem: bug eyed monster? I.e. appealing to an alien race to solve your equations for you!




#6
Apr2006, 08:33 PM

Sci Advisor
P: 1,253




#7
Apr2106, 03:28 AM

P: 1,157

Is that the same as the common Boundary Value Problem...
<should've looked at link first...> <looks> no! :) 


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