Recent content by marina87

@Ray I was very wrong. If I sketch a sample realization for x(t)=C with C been uniform over [-5,5] I will have for example a realization with a horizontal line in x1(t)=-5 (the y-axis) another realization can be x2(t)=2.5 with a horizontal line in 2.5 from t>=0. Am I right?

That makes sense and it fix find but I am at zero can I go to position -1? I want to understand/interpret correctly the problem.

@RAY I understood the first part (a) but I have breaking my head with the second part. I have been thinking in how to do this but everutime that I think that after 6 steps forward or reach position 6+ I can not get forward I stop.

Because I understood that C is a random variable with uniform distribution over [-5,5]. The PDF is 1/(5-(-5)). That is 1/10 and not 1/5.

Problem statement: Define the random process X(t) = C where C is uniform over [-5,5]. a) Sketch a few sample realizations I need reassurance that if I do a a few sample realizations of this random process they are all going to look the same. They are going to be an horizontal line with...

That is the part where I got stuck. What is the best way to solve this problem? should I use Jacobian or should I use the distribution properties? But my biggest question and where I need help is with the boundaries.

I want to change the title and didn't find a way to do it. i want to use a more appropriate title.

So I don't have the correct combination. Its not 10C2 its 10C6. That is what I obtain using N=#steps X=#steps forward y=(N+X)/2 --> 10Cy I use the Y in the combinatorial.

A joint pdf is given as pxy(x,y)=(1/4)^2 exp[-1/2 (|x| + |y|)] for x and y between minus and plus infinity. Find the joint pdf W=XY and Z=Y/X. f(w,z)=∫∫f(x,y)=∫∫(1/4)^2*e^(-(|x|+|y|)/2)dxdy -∞<x,y<∞ Someone told me I can not use Jacobian because of the absolute value. Is that true? So...

I used combinations and yes that's what I tried and how I saw it at the beginning. The probability of try 10 times and only success two times but then I had my doubts. I am not sure if I am approaching the problem in the correct form because he can move two steps backyards and then he is going...

Random walk or binomial?? Statement: A drunk person wonders aimlessly along a path by going forward 1 step and backward 1 step with equal probabilities of ½. After 10 steps, a) what is the probability that he has moved 2 steps forward? b) What is the probability that he will make it to his...

Statement: A drunk person wonders aimlessly along a path by going forward 1 step and backward 1 step with equal probabilities of ½. After 10 steps, a) what is the probability that he has moved 2 steps forward? b) What is the probability that he will make it to his front door within 20 steps...

A joint pdf is given as pxy(x,y)=(1/4)^2 exp[-1/2 (|x| + |y|)] for x and y between minus and plus infinity. Find the joint pdf W=XY and Z=Y/X. f(w,z)=∫∫f(x,y)=∫∫(1/4)^2*e^(-(|x|+|y|)/2)dxdy -∞<x,y<∞ Someone told me I can not use Jacobian because of the absolute value. Is that true? So far this...

Homework Statement I need to find the sideband power in a AM DSB. My book doesn't have an example or explain what to do when you have a modulating signal that has two tones (two cosines). Homework Equations Ps=sideband power= 0.5*(mean square value)^2 Carrier signal = A*cos(Wc*t)...

Thanks for the help.