Recent content by darthxepher

If it is a truss... Do we still account for the reaction force at support A in the y direction? If this was the case and I took the moment at A I would get : -1*(10) + -2*(5) + (2-0.707)*By + (2+0.707)Cy = 0 => 1.293*By + 2.707*Cy = 20 And for the sum in the y direction of the system...

Homework Statement I was doing a problem with my friend (the image that is attached to this) and when looking up a solution online... It said that the forces at reaction supports B and C are 5 kN in the y direction... Homework Equations The Attempt at a Solution We thought...

The actual problem is lim x-->0+ (cot(x) - 1/x) Do you think you could come up with a similar problem and help me with it so I can apply that to the original one? Sorry, I think this is making it overly difficult, but I would rather not cheat.

I'm not supposed to get help with the exact problem, but, in general, you what do if this happens?

THANKS! I figured out what i did wrong. 18.02 g/mol = 18.02 kg/kmol! :P

Homework Statement I am going crazy! The problem tells me to use the ideal gas equation to solve for the specific volume. They give the pressure, 15 MPa, and the temperature, 623 K. However, solving it is not the problem. The problem is that I keep on getting the answer off by a factor of...

I solved it with a fid = fopen(path,'wt'); fprintf(fid,writer); fclose(fid); :)

Hey, so i want to write a string to a .txt file and I tried by doing this: save filename.txt writer (where writer is the variable containing string) ... But i get weird char. instead of the string. Any ideas?

How would one know when to find the least squares approximation?

Do you know how to tell if the least squares approximation exists?

If the only solution to Ax = b is the trivial solution, then is that solution considered unique?

Need help creating a recursive script in MATLAB that can do this: S = 1^2 + 2 ^2 + 3^2 + ... + n^2 : P Thanks.

Ya i did that, then solved for k but that still doesn't give me a polynomial... :P

The assignment is to find some value of k given some information, but the assignment wants us to convert that expression into a polynomial then solve for k. Does that make sense?

Homework Statement Turn y = y(0) * e^(-kt) into a polynomial. Homework Equations The Attempt at a Solution I have no idea of how I would go about doing this. I know you can use taylor series to approximate it, but is there any other way? Thanks, Darthxepher