# Bastian Arturo Romero Mardones

**Statistics**

RANK**312**

of 247,123

REPUTATION**214**

CONTRIBUTIONS

**0** Questions

**99** Answers

ANSWER ACCEPTANCE **
0.00%
**

VOTES RECEIVED**16**

RANK**13,972** of 17,229

REPUTATION**9**

AVERAGE RATING**0.00**

CONTRIBUTIONS**2** Files

DOWNLOADS **13**

ALL TIME DOWNLOADS**89**

CONTRIBUTIONS**0 Posts**

CONTRIBUTIONS**0** Public Channels

AVERAGE RATING

CONTRIBUTIONS**0** Highlights

AVERAGE NO. OF LIKES

**Content Feed**

How to ask use to enter values

An example of input. prompt = "Value "; H2 = input(prompt); CH4 = input(prompt); xTable = table(H2,CH4) xTable = ...

12 months ago | 0

A problem containing Interpolation

You must change: x=linspace(1,15,6); %%This line 6 equally spaced data points y=2*x-3*randn(1,length(x)); %%This line x2=lin...

12 months ago | 0

How do we take the inverse fourier transformof this image

Your image: img = imread('imagen','jpg'); h = ifft2(img); %inverse fourier transform imagesc(abs(h(:,:,1))); inverse fouri...

12 months ago | 0

| accepted

how to write special matrices

I think it is not very efficient, but works a = dec2bin(0:15); i = 1; while i<17 c = randi([0 1],1,4); if(a(i...

12 months ago | 0

Plot transfer function with exponential function

You need add inputdelay sets=tf(4,[1 4 4],'inputdelay',1) sets = 4 exp(-1*s) * ------------- ...

12 months ago | 1

Matrix dimensions must agree.

The arrays dimensions are differents Dn/W.*log(1+((Pr.*h)/sigma2)+(Texe)) %Is a 10x10 complex matrix If you use Tup(k) %You a...

12 months ago | 0

| accepted

2d matrix column plot

You can make a plot with comand plot(): x(:,1) = 0:pi/100:2*pi; x(:,2) = sin(x); plot(x(:,1),x(:,2)) more info: https://es...

12 months ago | 0

Change name of subplot into 2 for

You can try change: Muscle_Task=strcat('Muscle',num2str(mrkr),'Task',num2str(muscle),'.bmp'); to: Muscle_Task=['Muscle' num2s...

12 months ago | 0

| accepted

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; %...

1 year ago | 0

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(...

1 year ago | 0

| accepted

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...

1 year ago | 0

| accepted

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'; ...

1 year ago | 1

| accepted

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...

1 year ago | 0

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...

1 year ago | 2

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...

1 year ago | 0

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...

1 year ago | 0

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...

1 year ago | 0

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...

1 year ago | 0

| accepted

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...

1 year ago | 0

| accepted

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

1 year ago | 0

| accepted

Calculation of two less than equal

For the left side it is: n = sqrt(C-1); The other side it is the same.

1 year ago | 0

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}=...

1 year ago | 0

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...

1 year ago | 0

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-...

1 year ago | 0

| accepted

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/...

1 year ago | 0

| accepted

How to create a periodic function?

You can use this function: https://es.mathworks.com/matlabcentral/fileexchange/83058-continuous-piecewise-function-linear-funcio...

1 year ago | 0

Error Message: valid interpreter syntax

add in xlabel() xlabel(filename,'Interpreter','none')

1 year ago | 0

| accepted

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...

1 year ago | 0

| accepted

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...

1 year ago | 1

| accepted

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...

1 year ago | 0

| accepted