Recent content by angel23

:) it is too late, sir i got my answer once i posted the question.(it is too late all) any way thanks.

i am really too confused everytime i solve this problem i get different solution ! i solved now and got the same result as yours. but please tell me if the coeff of s^1 is(3k+1)(k-1) then how to get the range?

how did you get that for s^1 k<1 the coeff is (3k+1)(k-1)(2k) so K must be >1 not <1 ! i just want to know how did you get this as i substituted by a value greater than 1 and found system to be unstable.is there anything wrong with my rules or numbers?

resonance frequency! what is meant by resonance frequency ? i really can't get it. if anyone could help i will be gratefull.

to find values of k for which the system is stable. s^4+2ks^3+2s^2+(1+k)s+2=0 first (1+k)must be >0 and 2K must be >0 then i construct routh array to get 3k-1/2k as a coefficient of s^2 and (3k-1)/2k *(1+k) - 4k as a coefficient of s . then k must be>1/3 and K>2.15 and K>-0.154 then k...

this is the full question given to me to solve and i am sure it is complete.

Homework Statement consider the difference equation x(n+2)-0.3679x(n+1)+0.3679x(n)=0.3679u(n+1)+u(n) where u(n) is the input and given by u(n)=0 n<0 u(0)=1 u(1)=0.2142 u(2)=-0.2142 u(n)=0 n=3,4,5... determine the output x(n) The Attempt at a Solution let A=0.3679 and...

it has memory. right?

ok a memoryless system is the system in which the value of output at t1 depends only on the value of the input at t1. now i want to apply this on the given system how can i do?

does this system have memory or memoryless??and why?? Y[n+1] + 4Y[n] = 3 X[n+1] - X[n]

in Newton forward differece method. how can i know that i reached the best interpolation? for example in a function like sqrt(x) for Xi=1,1.05,1.10,1.15,1.20,1.25,1.3 the best interpolation is at P3(x) why?how can i know? this really makes me conused:confused: :confused: if anyone...

find convolution of. n+1 0<=n<=2 x[n]= 0 otherwise h[n]= a^n u[n] solution: y[n]= a^n + 2a ^n-1 + 3 a^n-2 is it right?

how does it work?? i am really too confused and can't understand its idea. can anyone help??:confused: :confused:

i looked at my function and found no parameters containing the variable t so i said it is a time invarient system.. am i right or wrong? is there any other way i can use to check whether my function is time varient or time invarient?

why is Y(t)=X(2t) time varient ??