Recent content by polibuda

I have a problem with checking angle in phasor diagram. I print my phasor diagram and I don't know how to check angle in window. Have somebody any idea how to search that? Maybe it is not possible and I need to add function in my MATLAB code to get result.

I have no idea how to answer to these questions. Our teacher has given it to solve, but i don't know where I sholud to search informations. Could somebody recommend me valuable sources of knowledge?

Well, I don't see any problem in my thread. I want to ask if this method is correct. I found a movie with way how to solve system differential equtions by elimination, but I can't verify it is ok. The film: I sent it to my instructor and he said he don't know this method, and when I want to...

I would to know if I'm solving system differential equation by elimination correctly. Could somebody check my sample task and tell if something is wrong?

That is good advice. Thank you for help.

My problem is that I can't check solution of task in any calculator (only in wolfram). I have the system of differential equations: x'=3x-4y+1 y'=4x-7y+10t I solved it and the result is: but when I check result in wolfram I receive something like that: What is the problem? Are any else...

Is it good?

Could you advise me how to determine resistance in A case. I'm confused. I have no even dr in my formula.

I made one mistake. That is good result.

I consider how to determine the resistance for A case in this easy method. For C formula is: For B formula is:

I'm sorry. I had to have sure, that is good interpretation. Well, I have the formulas to B and C, but I consider about A. My instructor, said that in A formula is logarithm (that is advise from him), so maybe you are right.

This task is translated from another language. Everything is correctly translated, but person, which wrote this tasks made a lot of mistakes. But my university has still used lists with his tasks (I don't know why). I sent email to my instructor and I'm waiting for his responding.

Is it possible to determine resistance with two radii, length and resistivity of this element? So should I determine two more resistances and sum them with first?

That informations are not given in my task.