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**Content Feed**

Solved

GJam 2017 Kickstart: Vote (Small)

This Challenge is derived from <http://code.google.com/codejam/contest/6304486/dashboard#s=p1 GJam 2017 Kickstart Vote>. This is...

12 hours ago

Solved

Magic!

Check whether the input matrix is a normal magic square: http://en.wikipedia.org/wiki/Magic_square Output the logical value tr...

13 hours ago

Find the value from the integral equation

You can solve it symbollically (This requires symbolic toolbox) syms w m0 A=(cos(4*w)*cos(4*w)+1)/(1+exp(w-m0)); eq=int(A,w,-...

15 hours ago | 1

Solved

Number of cyles and fixed points in a permutation

A permutation can be constructed from one or more sets of elements in cyclic order. A permutation in a single row vector form ...

1 day ago

Solved

Best Square-Shaped Grid for Subplot

If you have x number of plots, find the optimum 'm' number of rows and 'n' number of columns for subplotting where the overall f...

2 days ago

Which is the most accurate way to solve these equations?

"Which is the most accurate way to solve these equations?" Generally, the most accurate way to solve any equation is analytical...

2 days ago | 1

| accepted

Solved

Find the point of intersection of tangents.

Given two points on a conic, find the point of intersection of the corresponding tangents. The conic is given in Cartesian coor...

2 days ago

How can I use one row having full data whose elements repeat [like A(:,1) below] to query another data of the same type but having some elements missing?

A = [0 10; 0 20; 0 25; 1 30; 1 40; 2 50; 2 60; 3 70; 3 80; 4 90; 4 100; 5 10; 5 20; 5 35]; B = [0 110; 0 210; 1 300; 1 405; 2 6...

2 days ago | 1

Solved

Script file size

Determine the file size of a script, "function.m". This is the base scoring method for Cody and the Matlab Contests. A method ...

4 days ago

Solved

Verify Law of Large Numbers

If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

5 days ago

Solved

Generate Hadamard Matrix

In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...

5 days ago

Taking one dimension of a matrix

in = rand(972,48,128); out = in(1,:,:); size(out)

6 days ago | 0

| accepted

Attempt to grow array along ambiguous dimension. it happens when N,M are smaller then the total of A,B. can I make my code work for any value of N,M? if so how would I do that

The number of elements in C is greater than the total number of elements pre-allocated in res. You can not put 22 elements in 2...

7 days ago | 0

| accepted

What is the function of this button? Where is the corresponding official document link？

The function of the button is to generate Fixed-point data via a dialog box. I don't know if there is a documentation specifica...

7 days ago | 0

Error using * Dimension do not match

As you can see here, Jac is 2x2, thus inv(Jac) will also be 2x2 and f is 1x2. The multiplication of 2x2 with 1x2 is not possible...

7 days ago | 0

| accepted

Homogenuous differential equation with conditions

j=22; y=[-8.2,0.6]; As you can see below, you are using non integer values as an index, which is not possible. i = -8.2:j+0.6...

8 days ago | 0

How do I plot the different elements of a matrix in a single plot?

for t = 0:1:100 omega1 = 0.02*cos(0.15*t) + 0.03*sin(0.15*t); omega2 = 0.03*cos(0.15*t) - 0.02*sin(.15*t); omega3...

9 days ago | 0

Generate array of sequence pairs without iteration

A combination of repelem and repmat - M=13;N=8; %corresponding arrays m=1:M;n=1:N; out1=[repelem(m',N,1) repmat(n',M,1)] ou...

10 days ago | 0

| accepted

How to store values in matrix form for differn iteration

Use reshape() %in case of row array x=1:3500; y=reshape(x,7,500)' %in case of column array a=(1:3500)'; b=reshape(a,7,500)...

10 days ago | 0

| accepted

Convert Equastion to Matlab Code

Transfer Function Model Example for reference

11 days ago | 1

How do i plot many short horizontal lines when a value is available?

%random data A=randi(100,1,10) B=randi(100,1,12) %You can not use max, because A has less elements than B elements N=min([nu...

11 days ago | 0

Convert numeric 2D array to array of orders of values

I couldn't think of a vectorized solution (yet), so here is the for loop approach. If and when I find a vectorized solution, I ...

12 days ago | 0

| accepted

Solved

feeling VERY lucky?

Just like Matthew's problem 2793 and Edward's problem 2872 (guess the number that Cody is thinking) but now you must solve it in...

13 days ago

Variable passed through function doesn't work

How are you calling the function? Also, Use strcmp or isequal to compare strings behavior = 'drug' isequal(behavior,'drug') ...

13 days ago | 0

| accepted

can someone check the code i have problem

You can do that without defining C (If I understand what you want to do correctly) B = [4;6;4;6;6;4]; m = 6; n = 30; L = 200...

13 days ago | 0

| accepted

How to write this thetta fuction in Matlab? I have an example code in Python

@Beket, your code needs some changes 94th and 95th line of your code, you used b in c_rinf before defining it. c_rinf = @(r) Q...

13 days ago | 1

Writing IF STATEMENT that omits empty fields in different arrays of a structure

You need to use () with isempty, otherwise it would assume the input to be a string array y = []; isempty(y) isempty y %even...

14 days ago | 0

Arranging a vector to new index position

You mean like this n=15; E = randi(50,1,n) idx = randperm(n) Eprime = E(idx)

14 days ago | 2

| accepted

How can I rearrange this matrix into new one?

Assuming data is homogenous (In pairs throught-out), and end value is greater than or equal to first value. data=[50 67.5; ...

14 days ago | 1

| accepted

Why my function is not vectorized

dv = [1 5 10 20 50]; vc = sqrt(0.8*200*2*365*24*3600)/1000; figure for i = 1:5 dvc = dv(i); %vectorizing the functi...

14 days ago | 1

| accepted