Qi Check the linearity, casualty, stability and the time variance of the following: 1. y(n) - 3x(n+4)+ x(0.5 n) + 2x(n-2) 02 аз 94" 2. y(n) - n² x(n+1) For the following signal x(n)-[131044101], write the function x(n) in: 1. graphical representation 2. functional representation 3. Tabular Find the convolution between x(n)-[3,2,1] and h(n)-[4,0,1] in: 1. Graphical method 2. Table-look up method Find Ku and Kl in analytical convolution method for the following signals if h(n)-[155212] and x- Q5° Q 6 ↑ 1. x(n)-h(-n+3) 2. x(n) u(n+1)-u (n-6) Check the linearity, casualty, stability and the time variance of the following: 1. y(n) 4x(n-2) 2x(n-1)+ x(n/2) 2. y(n) - 1/n x(n+4) . 3. y(n) 0.25 x(n-1)+ 0.5 x(n+1)-0.4 y(n-1) Sketch the signal x(n) shown below as: 1. x(n) u(l-n) 2. x(n) [u(n+2)-u(n)} x[ انيا 4324012345

I want solution by handwritten

Communication Lab

1) y(t) = 3e-2tu(t)The function above defines the model of a signal from the braking activities of a vehicle.a)sketch the signal using the information above.b)Determine the power & energy of the signal. 2) A sensor is used to capture voltage signal y(t) from a volcanic eruption & passed through an active highpass filter system for processing.a)Make a circuit diagram sketch for the process.b) Derive an expression for the transfer function of the system. c)Cut-off frequency = 2.5kHz & Input voltage = 20mVUse the above data to determine the values of the circuit components needed to produce an output of five volts. d) Suppose a two volts input voltage is applied to the filter system,  In terms of unit step function, i) what is the expression for this input? ii)Determine the output z(t) of the system. Assumption: All the circuit components in the transfer function equation have unity values.

Consider the following continous time signal x(t).  Assume that the signal was sampled at a sampling frequency of 20 Hz.  Plot the magnitude spectrum of the sampled signal as a function of cyclic frequency. Be sure to include n values of up to +-2. Label x and y axis.  Did aliasing occur? If so, what is the aliased frequency? x(t) = 1 + 2cos(2pi25t)

The plot below shows a sampled continuous signal, with red dots indicating sample points. Determine if the signal has been sampled appropriately, so as to avoid aliasing. For the case where the signal has not been sampled appropriately determine the aliased frequency and enter the result in the answer field below (enter a numerical value only +- 5% tolerance). For the case where the signal has been sampled sufficiently enter the sampling frequency. Amplitude 30 20 10 0 -10 -20 -30 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 Time (seconds)

Please assist with question 1 and why its true or false. Thank you.

We encouted different types of signals every day, 1) what is contineous signal? Show an example of contineous signals in your experience. 2) What is a discrete time signal? Show an example of discrete time signals in your life. 3) What is a random signal? Show an example of random signals in your life. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt 三 = x? X2 8 深 T Te ABC Ω - 田田国 Ť (} !!! !!!

Hi my professor (signal and system analysis ) give me this screenshoot to understand but i don't know what the subject or how to slove it can you help understand .   Thank You .

Write the followiing signal in the exponential form: 3cos(20TTT-TT/2) Multiple Choice 1.5e Ja/2@j20nt+1.5ejī/2ej20nt 3elt/2j20rt43ej/2ej20nt 1.5eJt/2ej20rt,15eJt/2e]20nt