Recent content by jimep

  1. J

    An easy? Matlab Problem involving matrices

    Yess! This is much nicer. I also feel that I have to apologize for my 'best bet' part. I just thought that less computation time would be more efficient.
  2. J

    An easy? Matlab Problem involving matrices

    Your best bet is to iterate through the Sn with x. I've written a bit of code here, its the worst code possible, a programmer might murder me if they would get a look at this but it solves the problem. Now go and write clean code; [FONT="Courier New"] %2.11 clear all; clc...
  3. J

    Basic statics question on shear moment equation

    Yeah that's a good idea. It would be a really good idea if you check out the problems with loads. They give a better insight on the nature of the problem. F7-8 gives a really good example on that. Try solving that and we can discuss it afterwards.
  4. J

    Basic statics question on shear moment equation

    Glad to have been able to help. Of course, you may contact me with the link. I personally prefer to integrate over the shear forces. But if you are not comfortable with calculus then you might prefer the cross-section method. Either way you'll come to the same conclusion. Just make sure to...
  5. J

    Basic statics question on shear moment equation

    Please also refer to the two pictures below which I have created to further explain your problem. As I have said there must be no movement of on the wall side so in picture 1 you have what is the correct solution. In picture 2 you have the opposite of the correct - and that is exactly what...
  6. J

    Basic statics question on shear moment equation

    Hello, I will try to explain the problem. What you are dealing with is an encastre' support. This is actually called a cantilever. To understand this please try to imagine a beam stuck into a wall. When you apply the force, the wall will provide reactions in all directions, that is X,Y and...
  7. J

    Math behind rockwell hardness measurement

    If you are referring to the standard Rockwell method then there are two forces that are applied, the first F0 is applied first then another load, significantly larger than the first, is applied. Considering your case you could sort out the list of indenters and their respective Rockwell...
  8. J

    Proving an identity to have solutions over all the integers

    Thank you man, I perfectly understood how to solve this. 3x+2y=5 => 3*(2a+1)+2*(1-3a)=5 And then just to practice I solved another one 4x+3y=10 => 4*(3n+1)+3*(2-4n)=10 Are they correct?
  9. J

    Proving an identity to have solutions over all the integers

    Hello, I was looking at some math problems and one kind caught my attention. The idea was to prove that let's say 3x+2y=5 has infinitely many solutions over the integers. Can someone show me the procedure how a problem like this might be solved?
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