Recent content by rforrevenge

the original question is that i have to find the DE of that Laplace transform s*Y(s)+Y(s)/s+1=X(s)

Yes i am sure.I found out that the denominator has no roots,so there must be some problem with that expression our prof. gave us

The fraction is: (s+2)*(s+1)/[(s+2)*(s+1)*(s^2+1)-1] The -1 is a part of the denominator

Homework Statement I want to decompose this (s+2)*(s+1)/(s+2)*(s+1)*(s^2+1)-1 using partial fractions so after that i can inverse Laplace it. I have been working on it for several hours but i cannot find a solution. Any help? Homework Equations The Attempt at a Solution

Thank you.I did it and i found a DE. Don't know yet if it is correct,though.I will tell you as soon as my teacher grades my paper.Thank for the help,though. I really appreciate it.

Homework Statement What is the inverse Laplace transform of Y(s)/(s+1) ? Homework Equations The Attempt at a Solution I think it is e^(-t) * y(t). Am i right?

Homework Statement I have this parallel system and i have found its transfer function.Now i have to find what is the differential equation that links the input and the output Homework Equations u(t)=input, w(t)=output H(s)=w(s)/u(s)=s+1/s(s+1)+1 -->transfer function The Attempt at a...

Hey everybody! I am an undergrad student ,in an ee department.Ive taken "signals and systems" and two ago we got into the Fourier part. The question i have is whether or not there are some steps someone can follow in order to find the Fourier series given some specific graph.Now,our professor...

Homework Statement Recently in my signals class,we got to the chapter of Fourier series.We have learned that there are some basic graphs that can be described with Fourier series (sawtooth,square pulse etc) and so far i have understood their respective Fourier formulas.The problem i face...