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PEC

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MATLAB enthusiast , Mechanical engineer (MeMe) :-)

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Can someone rectify this code?
@Rajeev Check the size of vectors used for conditions inside fsolve i.e. Q0 and (1:1:10) function F = myfun(Q) ks = 0.015/12;...

4日前 | 0

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How do I correctly write the following function ?
@Iurie Obodeanov, Close the parenthesis for first term i.e. sin term , and remove the dot at the end of 2nd term as below sym...

5日前 | 0

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Error: starting_stepsize
@Buey Cande See the following changes to your code Fao=1.5; %ep=0; d=[0.1:0.25:1]; kprime=3.*(3./(60.*d).^2).*(((60.*d).*c...

9日前 | 0

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How to increase speed of this code
@ASHA RANI one way to speed up code is increase the step size or increment in the OM array. The variables used in the equation...

15日前 | 0

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Distance between points in a 2D matrix
for i=1:m %go through each column for j=1:n %go through each row dist(i,j)=sqrt(((RV(i,j+1)-RV(i+1,j+1))^2)+(RV(i+1,...

16日前 | 0

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Plot: Dots won't go higher than y=0
clc clear % Inledande data d0 = 30e-3; % Diameter (m) h0 = 40e-3; % Ursprunglig höjd (m) h1 = 34e-3; % Höjd efter första...

19日前 | 0

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How to create separate tables so that I can have them open at the same time?
@Jacob Allen You can make the following changes to the code. If you want to display table data in different tabs you can use u...

21日前 | 0

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How to store arrays from this for loop and merge them to be displayed on an App Designer Table?
@Jastin You need to store the solution and iteration array to display the values in uitable as shown below normVal=norm(x_ol...

22日前 | 0

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Error message: Matrix Dimensions must agree
Hi @Ian Strahley, Use linspace to divide the data points uniformly for variables in the equation. use a function handle, w...

23日前 | 0

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f(x,y)=(x^2+y^2)/x = 0
@Nguyen Phuoc use fsurf function or mesh function % simple way f = @(x,y) (x.^2 + y.^2)./x; fsurf(f,[0,1]) % 2 x = linsp...

約1ヶ月前 | 0

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Facing difficulties regarding quiz section from course "Matlab fundamaentals" in module 4.
Remember to select all correct options. I.e 3(which you did already) and 6 only.

約1ヶ月前 | 0

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how can i create (generate) the Loop to Access Subfields:
@Gabriel To access elements of struct which are themselves struct, you need to use the . operator to next level of structure ...

約1ヶ月前 | 0

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I am unable to change the fontsize of axis ticks
@Chandramouli Santhanam, The below syntax should work better by using XAxis for axes handle x = rand(1,100); y = rand(1,100);...

約1ヶ月前 | 0

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Illegal use of reserved keyword "end"
for idx = 1:length(T)-1; % Give a space in for loop statement to close the loop

約2ヶ月前 | 1

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rated_torque not matching desired torque for IPMSM
Hi From the reference graph you have, it seems the value you get for rated torque is correct. It's about 2.25 Nm. If you loo...

3ヶ月前 | 0

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Hello, I am working on a matlab code for school and it is using a while loop. The problem with this is I want the while loop to run until the variable doesn't equal itself.
while R ~= Rc You probably need to change the while loop condition like above. Given the input value for Reynolds number ...

4ヶ月前 | 0

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Matlab If Else Statement
Hi @Joseph DeMaria You have saved the script file with name myfunx but it also contains a function myfun(x) which takes input a...

5ヶ月前 | 0

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calculating fourier series for the given functions and drawing the curve?
clear syms x N=[5 15 30]; f1=exp(-abs(x)); a_01=(1/pi)*int(f1.*cos(0*x),x,-pi,pi); f_new10=vpa(a_01/2) f2=exp(-(x)); a_...

5ヶ月前 | 0

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error in fourie script
g=@(x) 1.*(x>0)+(-1).*(x<0); a_0=(1/pi)*quad(g,-pi,pi) x = linspace(-pi,pi,200); for k = 1:numel(x) for n=1:10 ...

5ヶ月前 | 0

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I am trying to code a solution to blasius eq using Runge kutta 4, help please.
@Guillermo, The anonymous functions, F ,G, H defined for the blasius flow need to applied in the same manner when RK4 method is...

6ヶ月前 | 0

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How can I scale and plot the graph according to the formula I use?
@Zaref Li you need to take the differential for noise term while solving the equation i.e. dW instead of W % Define paramete...

6ヶ月前 | 0

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Plotting the attenuation constant against frequency
@Vinci Use smaller conductnce value, and semilogx for ploting graph % Clear screen and variables clc, clear all % Define d...

6ヶ月前 | 0

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Why are the results of the iterative calculations different？
%%%%%%%%%%%%%%% clear clc T=1e-3; t=0:T:1; u=sin(2*pi*50*t); hold on for k = 1: numel(u) y(k)=fcn(u(k)); end plo...

6ヶ月前 | 0

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How to plot level curves
@Irene Zhou there is a missing element wise product operator for the equation in your code. [X,Y] = meshgrid(linspace(700,900,...

6ヶ月前 | 0

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readtable struggling to interpret spreadsheet as numbers
seriesAL = rows2vars(readtable('Alberta.csv', ReadRowNames=1, MissingRule="omitrow",VariableNamingRule='preserve')) yy = strrep...

7ヶ月前 | 0

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Hi, I am having some trouble with a plot. I am trying to plot pressure vs. time using an equation for pressure with respect to time. Whenever I plot this I get a blank graph, so i'm not sure what the problem is. I appreciate any help!
@Sarah Fries Try using the vpasolve function and solve the equation for well defined input time interval. In your code, you we...

7ヶ月前 | 1

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I didn't understand it how they completed it?
@Mohit Define the symbolic variables d & theta for the given equation to be solved % syms d theta x = [d theta]; % defin...

7ヶ月前 | 0

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Workspace variable not available despite visibility in another variable
if you want to store the variable names Testsignal_1 and Current then you need to use an indexing variable as below. If this c...

7ヶ月前 | 0

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Adding Legend to Subplot
@Ollie Bardsley, you need to rearrange the few lines of code inside the for loop as shown below LF = ["0 1.fig","0 2.fig","1...

7ヶ月前 | 0

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Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

7ヶ月前

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