Recent content by Mateusz Szost

Homework Statement R(ABCDEF) D->F AB->C E->F C->BD D->E Decompose R into dependency preserving 3NF Homework Equations F = {D->F, AB->C, E->F, C->BD, D->E} The Attempt at a Solution My attempt is to first construct the minimal basis for the FD set F, which is G={A->C, E->F, C->B, C->D, D->E}...

Not really, actually. The question, on which I would like to get answer on, is about why temperatures in the differential equation cannot be higher than the temperatures that has been received from the simplified equation. See my start post for further details about the question (the very last...

Perhaps, but what is the point with integrating the whole differential equation? How will it help me to answer the question I am struggling with?

Let me get this right: I am solving a equation where d^2u/dx^2=0 for every given I. And I think this is what you mean when you say "the final state"...? The conditions will not matter, since you will get the same solutions anyway. Well, I don't know so much about Laplace equations, I have not...

What would the solution of the integral represent? How it is related to the answer on my question?

Okay, but do you rely on some specific theory that the graph you are solving actually has the temperatures that the differential equation would not be able to get such temperatures (just lower) in relation to the temperatures from the differential equation? I mean, you should somehow compare the...

And the slope you are talking about can be received by substracting a function value for the green line with corresponding function value for the red line at the same x point? Just want to make sure about this. And again, how do you put this drawn graph in relation to the question that I want...

What exactly does your graph describe? As far as I understand, the x-axis is the temperature you use as an indenpendent variable. But how about with y-axis? And again, how is your graph (at I=10) relevant for the question I want to answer on as I have asked from the beginning in this thread? How...

Having problems with opening the graph (if it supposed to open the graph through your link). But can you answer about how this graphing term for term in the differential equation and sign change of d^2u/dx^2 will answer on the question why temperatures in the real model (the differential...

When I am graphing both the terms together, they are like parallell to each other on the graph (my visual view). The second term in the differential equation is not drawn with a negative sign as in the differential equation. The only observation I can make is that the first term is constant...

And in which way would it exactly explain that the temperatures gained in the solution of the equation when solving with Newton-Raphson's method for U(I) are higher than the temperatures you gain when solving the differential equation?

Shall I make a graph for those terms from the simplified equation according to the assignment or from the given differential equation?

I have solved the latter equation by the help of Newton-Raphson's method for a every given I and I also plotted the solution just like shown in solution1.jpeg. I have also solved the differential equation with finite differences method and the highest temperature for a given I is somewhat...

Homework Statement Check on labb41.jpeg (I am not used to formatting my mathematical equations on the web, I can only format in my local text-editing programs). Homework Equations Again, check on labb41.jpeg The Attempt at a Solution I have plot the solution to U(I) as according to the...