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Project Euler: Problem 2, Sum of even Fibonacci

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

2 years ago

Solved

Project Euler: Problem 1, Multiples of 3 and 5

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

2 years ago

Instead of ga, what else can I use to solve nonlinear optimization problem with integer constraints?

http://mathworks.com/matlabcentral/fileexchange/35720-minlp--mixed-integer-nonlinear-programming Here is a file exchange entry...

4 years ago | 1

| accepted

Question

What is the best practice for passing data to use for visualization?

What is the best practice for passing variables to a function for visualization? I am working on a simulation of a flexible me...

4 years ago | 0 answers | 0

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answersApply Small Perturbations to Simscape Multibody Rotational/Translational States for Model Linearization

You can specify motion to the 6-DOF joint by going to actuation and setting the force to be automatically computed and the motio...

5 years ago | 1

| accepted

data every second. want matrix with mean data of every minute.

Use |retime| and |datetime|: a = ones(100, 7); a(:, 7) = randi(15, 100, 1); mins = repmat(1:10, 10, 1); a(:, 5) = mi...

5 years ago | 0

| accepted

Solve nonlinear equation with positive solution (fsolve)

You can set an assumption on the equations using |assume|, in this case there seem to be no solutions for this problem. x ...

5 years ago | 1

Why is this sparse multiplication failing?

You could use the relevant indices to perform the multiplication: b = sparse(17249876309, 29); b(430: 490) = 1; c = ...

5 years ago | 0

| accepted

How to remove entries form a struct array?

Logical indexing should work, just note that you need brackets around s.area. field1 = 'area'; value1 = num2cell(1:10) ; ...

5 years ago | 0

| accepted

How can I find circle diameter using arc ?

Take three points on the arc, draw lines between them and take the bissectors of those lines, where they meet is the center O. T...

5 years ago | 0

How user move lines that is drawed in a figure interactivly and extract the data of new location of lines ?

Take a look at doc impoly or doc imline For example: imshow('gantrycrane.png'); impoly

5 years ago | 1

| accepted

Access Time Table elements in a struct array

You could use arrayfun to put the elements you need in cells and then combine them using cell2mat: a(1:5) = struct('myFiel...

5 years ago | 0

How to plot three y-axes in one figure, where each one y-axis have three lines to be plotted?

Check out doc subplot For your example: figure(1); subplot(3, 1, 1) plot(x,y11,y12,y13);%1st y-axis subplot(3, ...

5 years ago | 0

Making a more user friendly simulink model

Select the subsystem and press mask>edit mask or CTRL+M. Then go to parameters & dialog and you can add some _Edit_ parameters c...

5 years ago | 0

How can I invert the following matrix ?

The system of equations does not have a solution, they are linearly dependent. What do you mean by _"the result is not the resul...

5 years ago | 0

Can anyone explain the loops in this code?

They're counting the number of white points, black points and matched data, but they could be replaced by using logical indexing...

5 years ago | 0

How to optimise a definite integral?

You don't need to have the analytical result, simply pass the integral as the objective function with a function handle and k2 a...

5 years ago | 0

Plot a line between 2 points and extend the line a determined distance

I would first read the documentation before grabbing stuff off file exchange if I were you, because the fillline is really not n...

5 years ago | 0

Nested for loop produces plot that is shifted horizontally

You evaluated at the index of the timevector, rather than at the time itself. You could write |time(time_point)| instead to get ...

5 years ago | 0

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FFT of sine function

You'll get both positive and negative frequencies, see doc fft for an example of a single-sided spectrum, i.e. only po...

5 years ago | 0

Getting the real solutions of non-polynomial equations

What do you mean when you say you only want real solutions, don't you just want the correct solutions? You could take the real p...

5 years ago | 0

How can I find the area above the parabolic curve for this particular case?

An elegant way to do this is via function handles: x = linspace(0, 11, 100); y = @(x) .0012*x.^1.5; yforArea = @...

5 years ago | 0

| accepted

Query regarding solving differential equation

I'm guessing you are trying to use ode45 with variable timestep, make sure to pass y and dy/dx as an interpolation function such...

5 years ago | 0

How to model human leg joint stiction?

Are you sure you want to use first generation Multibody software? In second generation you can use the <https://nl.mathworks.com...

5 years ago | 0

Sort the array by template

a1 = [1 4 2 5 7]; b1 = 1:5; mySecretOrder = [1 3 2 5 4]; a2 = a1(mySecretOrder); [~, order] = ismember(a2, a1)...

5 years ago | 3

Need Help this assigment

GMDP is a struct GMDP.Ploc is a field of GMDP GMDP.Ploc{1} is a cell containing a 3D array GMDP.Ploc{1}(:,:,1) is...

5 years ago | 1

| accepted

How can I clear an entire table column without deleting the variable?

You can simply overwrite the values by indexing with curly braces if that is what you want t = table(rand(6, 1), rand(6, 1)...

5 years ago | 0

Curve fitting to data

What you are looking for is just a linear fit to your exponential function, you can do this by using the |mldivide| operator "\"...

5 years ago | 2

| accepted

How to replace findpeaks() with another function

<https://nl.mathworks.com/matlabcentral/fileexchange?term=peak+find> Any of these options on the file exchange might help you...

5 years ago | 0

| accepted

Function Changem or substitute values of a matrix

|changem| is part of the Mapping toolbox, type ver to see which toolboxes you have installed.

5 years ago | 0