Hi everyone,

I am trying to copy a 178x2 matrix into maple. the data is in a .dat file in two columns. For example the first few lines:

+2.000000E-10 +1.636232E-05

+3.017707E-05 +4.531920E-05

+6.065973E-05 +7.586885E-05

+9.096636E-05 +1.059570E-04

+1.208671E-04 +1.357189E-04

Hi all,

I am trying to define iso surfaces mathematically. From teh output of a numerical simulation, I have a 3d field of a parameter called MF. So, MF = MF (x,y,z).

So, when I have MF = constant, I will hypothetically have the equation for a surface called x = f(y,z). As I said it's the output of a simulation so I don't have a defined function for MF. Now, I wanted to calculate the surface area on a constant value of MF. I know that the way to calculate a surface is: integral of(1=Fx^2 +Fy^2)^0.5. on the other hand I know that MF = 11, everywhere on the surface. I am trying to come up with an expression for surface area, based on special derivatives of MF. I started by assuming a potential field for MF, but I didn't get to a conclusion and got a little confused. I would greatly appreciate any comments or helps.

Thanks,

Haley

Hello everybody,

I have an nx2 matrix of (t,w) , I need to fit a curve of the form of w = A(t-b)^c to the data. What I have already tried is to pick a value for b, then regress log w on log (t-b) linearly, which is not very accurate. I'd  greatly appreciate any comments that could help me to find the optimum values for A, b and c through regression methods.

Thanks a lot,

Haley