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Bastian Arturo Romero Mardones


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97 total contributions since 2020

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Answered
Need help with a riemann sum
Cambié un poco el código, pero casi nada. clearvars; a = 0; b = 2; n_rec = 100; delta_x = (b-a)/n_rec; x = 0:delta_x:2; %...

2 days ago | 0

Answered
Improfile changing colour of plot
You can try: %Example Mathwork I = imread('liftingbody.png'); x = [19 427 416 77]; y = [96 462 37 33]; [a,b,c] = improfile(...

3 days ago | 0

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Answered
I'm trying to take the integral with two variables being arrays and this error keeps popping up. I'm not sure if there is another way, or if im missing something. this is what i have put in the code.
I think the upper limit of integral cannot be a matrix. if you change Iy = int(dA*x^2,x,0,b) %b is array the code works sym...

3 days ago | 0

Answered
Random selection from a pool of questions
I changed 2 lines and it works QandA={'what is 6x8? ', '48'; 'what is 12x12? ', '144'; 'what is 60/12? ', '5'; ...

3 days ago | 1

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Answered
y=a*b^x
For example if your y = a*cos(x), you can use plot like this: x = 0:1e-2:20; %x values a = 2; %can be anything constant number...

3 days ago | 0

Answered
Why is my functions not plotting a line?
you need add one point Wab=9.42; d=0.12; s=0.1; % 0.3, 0.6 & 0.9 theta=0:0.1:6.28 Wcd=(s.*Wab.*(s+sin(theta)))./(1+s.^2+2...

3 days ago | 2

Answered
How can I stop my program and ask for the wish operation?
You can use a if umi = '1 = A*B 2 = A/B '; opc = input(umi); %input (multiply or divide?) disp(' ') dis...

3 days ago | 0

Answered
how can I plot multiple y values for single x value?
you can try creating a vector of ones and multiplying this by your x values, for example: y = rand(1,15); xvalue = 3; x = xva...

3 days ago | 0

Answered
Matlab program to plot y(t) graph
If you function is y(t), and you iterate this function in the time, your can plot it: time = 0:0.01:1; y = sin(time) %Your y(t...

6 days ago | 0

Answered
High Frequency Square Wave
You can try with square() --> More Info For example: time = linspace(0,1,1000); frecuency = 5; %or other frecuency x = squar...

6 days ago | 0

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Answered
Storing data in matlab matrix using loop
You can try use cell() i=1; for k1=2:1:20 for k2=2:1:20 for k3 = 2:1:20 M = [k1,k2,k3]; if...

6 days ago | 0

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Answered
Solve equation in interval
You can try: syms x f = x^2*exp(-x) fder = diff(f,x,1) vpasolve(fder,[-1 1]) %change solve

6 days ago | 0

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Answered
Calculation of two less than equal
For the left side it is: n = sqrt(C-1); The other side it is the same.

7 days ago | 0

Answered
Problem in using symsum
syms x k x(1)=-2; x(2)=-1; x(3)=0; x(4)=1; x(5)=2; f(1)=-2; f(2)=-1; f(3)=0; f(4)=1; f(5)=2; for i=0:4 a{i+1}=...

7 days ago | 0

Answered
Plot please help / plot the domain of transfer function
You can try with tf(): more info: https://es.mathworks.com/help/control/ref/tf.html fun = tf([5 30 55 30],[1 9 33 65]); % B(s...

8 days ago | 0

Answered
How can I write the matlab
I made a function that maybe help you: Link: https://es.mathworks.com/matlabcentral/fileexchange/82783-waveform-fourier-series-...

10 days ago | 0

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Answered
Piecewise function plot help
The length must be the same x1 = [0:0.1:1]; f1 = zeros(1,numel(x1)); %f1 with the same length as x1 x2 = [1:0.1:3]; f2 = [1/...

10 days ago | 0

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Answered
How to create a periodic function?
You can use this function: https://es.mathworks.com/matlabcentral/fileexchange/83058-continuous-piecewise-function-linear-funcio...

11 days ago | 0

Answered
Error Message: valid interpreter syntax
add in xlabel() xlabel(filename,'Interpreter','none')

11 days ago | 0

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Answered
Show filtered column of a cell array based on filtered cell header
Hi :D data= {'A' ,'B' ,'C';'1', '2', '3';'1' ,'2', '3';'1', '2', '3'}; fprintf("input with a space \n") %Example: a b or a c...

11 days ago | 0

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Answered
solving for an unknown variable when given the rest
syms V y = 0.05; k = 0.0806; v = 90; N = 4; h = solve(y == 1/((1+k*(V/v))^N),V) %multiplication sign missing you only shou...

11 days ago | 1

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Answered
How to use loop to reduce the code?
you can try with cell clc clear syms t sigma r = -4; w = 2; a = 1; b = 1; W = 1; x_2 = 1 A_sin = 1; A_sigma = [0,1;-w...

11 days ago | 0

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Answered
How to eliminate standalone 1 or 0 in binary matrix
You only need a loop and correct conditional statement, the conditional can be: if(A(n) ~= A(n+1) && A(n) ~= A(n-1) && A(n) == ...

13 days ago | 0

Answered
How to create hatched fill pattern histograms?
hello. You can try with the function in this url: https://es.mathworks.com/matlabcentral/fileexchange/1736-hatched-fill-patter...

13 days ago | 0

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Answered
numerator , denominator, Transfer function,Equation
You just need to enlarge the block

13 days ago | 0

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Answered
Calling a user-created function in a different script
You can call a function in your folder for example if your function is: function x = mulx2(y) x = 2*y; end from the main fi...

14 days ago | 1

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Answered
why is my vector bigger than how I created
Because the values are saved from space 11 onwards. You must change n+1 in sumvec() n+1 = 11 -- n-9 = 1 sum = 0 sumvec = [] ...

14 days ago | 0

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Answered
Creating a Matrix of random numbers
A long way bits= randi([-1 1],20,20); [r,c,~] = size(bits); count = 1; while count < (r*c)+1 bits = reshape(bits...

14 days ago | 0

Answered
Why am I not able to plot the error vs iterations?
You can store the data of (Z-z) in a vector: for ... zz(i) = (Z-z) if abs(zz)<10^(-6) break end end... ...

14 days ago | 0

Answered
Bit wise operation of And and XOR together
The binary operation is between two values logics or values of 0's and 1's. In your code some logics operation are done between ...

14 days ago | 0

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