Question

avarage running time problem

Hello, i want to calculte an avarage running time amongst all 100 iterations. for some reason my avarage running time is astr...

11 months ago | 1 answer | 0

Question

loosing precision extremely in fraction expression

Hello i have a two numbers (D1 D2) which are extremly close to each other very close,but when iput them into the formula shown b...

11 months ago | 1 answer | 0

Question

matlab code pc independant runtime question

Hello, i have a matlab code,each PC has a different computation power,even using Matlabs tic toc we get the time code ran given ...

11 months ago | 0 answers | 0

Question

loop causes enlargement of array

Hello, my theta vector 2X1 two values needs to be updated each itteration. instead i get theta to be size 1000 (as the number o...

11 months ago | 1 answer | 0

Question

python to matlab [1,x] form question

Hello ,there is a trick in python to turn every matrices of NX2 into an NX2 matrices where the first column is all '1' as shown...

11 months ago | 1 answer | 0

Question

matlabs polyfit not working correctly problem

Hello, i have a vector called "mean_vec" which consists of 81 values of " -0.1175 -0.1181 "-0.1175 -0.1194 -0.1197 ...

11 months ago | 1 answer | 0

Question

regress function itterations number

Hello, is there a way to know hoe namy itterations regress function made to reach its oprimal solution? Thanks.

11 months ago | 0 answers | 0

Question

zero padding between data

Hello, i have a vector shown bellow, how do i insert two zeros in between every bumber as shown bellow. Thanks. a=[1,2,3,4] a...

11 months ago | 1 answer | 0

Question

aliasing in frequency domain problem

Hello ,i am trying to show frequency domain transform of 3 sinuos signal.I samples it twice the frequency of the highest frequen...

11 months ago | 1 answer | 0

Question

polar reflection coefficient to impedance gamma2z question

Hello, how do i input the polar reflection coefficient shown bellow into gamma2z with z0=50? Thanks

11 months ago | 0 answers | 0

Question

mvregress itterations and error definition

Hello, i am trying to estimate a 100X1 vector using 100X2 matrices (B is 2X1 ) B is my coeficient solution. Howeer there is a p...

11 months ago | 0 answers | 0

Question

FIR filter sampling question

Hello, what is the meaning of fc/fs ? i cant see the logic of defining a signal in that way? Thanks

11 months ago | 0 answers | 0

Question

understanding cycle sample expression

Hello , I cant understand the logic in this expression "cycles/N = fx/fs" N is number of samples fs- frequency if the whole...

11 months ago | 0 answers | 0

Question

problem defining linear regression condition

Hello, i have built the first code( the top one which uses matlabs regress command to aproximate [m10;m5] (NX1) vector with [r...

12 months ago | 0 answers | 0

Question

multiple line plot inside a loop

Hello,I have built linear regression algorithms. but i cant see the final reult onle as shown bellow. is there a way to plot t...

12 months ago | 0 answers | 0

Question

extracting data from a picture of a chart

Hello, is there a way in Matlab to extract the data vector of the chart from this picture,for example the bottom one? Thanks. ...

12 months ago | 1 answer | 0

Question

randn command variance problem

Hello, i am trying to create a randomly distributed temperature where the avarage is 310 and variance is 4. I wrote the followi...

12 months ago | 1 answer | 0

Question

double regression interpretation with vectors

Hello when we enter the following vectoric line shown bellow, we get result B=[b1,b2] so how do i interpret the approximated v...

12 months ago | 0 answers | 0

Question

solving double equation with random data with regress

Hello,i am trying to find the best values of "eT" and "e" for m5 and m10 equations. I ran the following code, i assume the by d...

12 months ago | 1 answer | 0

Question

regress with vectors arguments

Hello,i know that in regress we make an estimation of our data using some other vector. In here We have estimation of two data ...

12 months ago | 1 answer | 0

Question

solving simple multy variable expression

I have built a simple expression where we can see that its solution t-Vs=1 for some reason the only solution it gives me is t=1...

1 year ago | 1 answer | 0

Question

solve an exponential equation with 2 variables(view combinations)

Hello, i am trying to solve the following equation shown bellow, by solution i mean to find all the combinations of R2 and Vs2 t...

1 year ago | 0 answers | 0

Question

2D oplimization plot from derivative inverse function

Hello, for x=1 i have a formula as shown bellow which is a derivative inverse function: I need to plot an optimization ...

1 year ago | 0 answers | 0

Question

derivarite of inverse of complex function

Hello , i have a function as shown bellow syms x Y=1./(log(x)-1) fplot(finverse(Y),[5,6]) We have made an inverse by using ...

1 year ago | 0 answers | 0

Question

complex function inverse plot

Hello, i have a plot a function y=1/(ln(x)-0.1) how can i plot X as a function of Y ,when y=[5:0.01:6] Thanks.

1 year ago | 2 answers | 0

Question

plotting a polinomial fraction over a strict range

Hello i have a product of the polider function which gave me two polynomial 'q' as numerator 'd' as denominator. q=x+1 q=[1 1]...

1 year ago | 1 answer | 0

Question

transfer function plot problem

Hello, I have extracted the poles and zeros of a circuit which have the following response shown in a plot bellow. the POLES a...

1 year ago | 1 answer | 0

Answered

Fourier transform of table signal

Hello i Have attached a src_square.txt source and its spectral fourier transform in the photo shown bellow and How ever the...

Fourier transform of table signal

Hello i Have attached a src_square.txt source and its spectral fourier transform in the photo shown bellow and How ever the...

1 year ago | 0

Question

Fourier transform of table signal

Hello, i am trying to perform an fft on a signal given by a table as shon bellow and attached in the txt file.I got the result s...

1 year ago | 2 answers | 0

Question

table plot into transfer function

Hello, is there a way to convert a bode plot (a table of dots are given) into its transfer function expression? Thanks

1 year ago | 0 answers | 0