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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

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Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<https://i.imgur.com/jlZDHhq.png>> Image courtesy of <http://up...

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Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

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Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

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linearizing a 2nd order ODE in matlab
Hi, Linearization of the given ODE can be done via Jacobian matrices that need to be derived. Some good appropriate discussi...

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Why is pagemtimes slower than just coding up the matrix multiplication?
Hi, There is no need to perform this loop calcs that is just a repeatition: tic %for i = 1:20 %% Electric Field Update...

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How can I create a confusion matrix from a simple fuzzy logic model?
Hi, Here is a nice help documentation by which you can develop *.fis models: https://www.mathworks.com/help/fuzzy/genfis.htm...

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Fit Curve to a "C" shape
Just a piecewise interpolation can be done in this case, but not fit model calculation: clearvars x = [1 0 -1 0 1]; y = [-1 -...

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How to save output from equation in for loop into an array
% Range from 0.0 m to 4.00 m using 0.01 m increment t=0.0:0.01:4.00; for ii = 1:numel(t) % Formula for enthalpy from entr...

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Two different solutions for one differential equation (population model)
Besides k1, in your derivations, there are some errs. Here are the corrected formulation in your derivation part: c1 = 4; c2 =...

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how i want to generate error indices and time domain specification?
Hi, You can easily compute the errors using the followings: ERR= SP-PV; IAE = trapz(T,abs(ERR)); % trapz=numerica...

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running of my m-function is very slow
Hi, From the quick scanned imression of your code, the following two points can be proposed. (1) You are using symbolic math ...

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Lagrange Interpolation related problem (plotting a graph)
Hi The answer is simple: plot(x, L(1,:)) OR plot(x, L(2,:)) plot(x, V) or plot(x, P) Or within the loop: ... if i~= j ...

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How to use 'layout' in nexttile to make the legend appear in the sixth position in 6 tiled chart?
Hi, Here is a realtively simple solution via an easy example: A = randi([1, 5], 6); p = bar(A); legend(p(1,6),{'6-th tile'...

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Distance of obstacle from Ego vehicle in Point clouds
Hi Mohammed, This help documentation can provide substantial hints for your exercise: https://www.mathworks.com/help/vision/...

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animate Double Pendulum with solved ODE.
Hi, Here is an updated and corrected code with a different animation procedure: L2 = 20; t = 0:.1:2*pi; double_pendule(t, L1...

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compute angles between antennas
Hi, The built in function of matlab to compute the phase angles is angle() It computes the phase angle between real and imag...

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How to set up a function
Hi, There are a few built-in functions of integral in MATLAB, such as int() - symbolic, integral(), quad() - numerical integr...

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NUMERICAL METHODS DISCRETISATION PROBLEM
Hi, You can employ pdepe()

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Streamlines over an airfoil
Hi, Here is a good script to simulate Joukowski airfoil: https://www.mathworks.com/matlabcentral/fileexchange/8870-joukowski-a...

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sinh(ax) plot
Hi, Use this synatx approach: syms x a = [?, ?, ?, ..]; % OR a = input('a = '); V = sinh(a(:)*x); fplot(V, [xmin, xmax...

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removing samples from a timeseries between certain time intervals
Hi Alexander, The answers to you posed questions as follows in the order of your questions: (1) Remove specific timeseries: ...

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How can I get real time value from the Simulink scope plot to use inside the MATLAB function block ?
Hi, if you have employed [To Workspace] block, you can use this syntax within your m-file: OUT = sim('ABC.slx'); % Simuli...

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Help to draw a graph of a function.
Hi, (1) There are some inconsistencies with the initial conditions. As given the formulations can never produce some ripples su...

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Printing an error message if jacobi's method, does not converges.
Hi, Here is an easy solution: ... if abs (Z-P) < t % if norm(r) < some tolerance , it is converged break e...

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i need to make space between two bar plot in x axis
Hi, ... bar(diag(n),1); % Change 1 to any other number to make bars closer and more appart ...

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How can I get real time value from the Simulink scope plot to use inside the MATLAB function block ?
Hi, (1) You would need to simulate your simulink model inside your matlab script that can be done with sin() that you have pr...

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How to code pde?
Hi, Here are a couple of good documentation libraries with examples: https://www.mathworks.com/help/matlab/ref/pdepe.html h...

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