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using ODE45 with condition
You can use <http://www.mathworks.com/help/matlab/math/ordinary-differential-equations.html#f1-669698 event location> to run |od...

約11年前 | 1

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Evaluating continued fractions
Given row vector c=[c0 c1 c2 c3 ...] evaluate the continued fraction x=c0+1/(c1+1/(c2+1/(c3+...))) If c is a ...

約11年前

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Mersenne Primes vs. All Primes
A Mersenne prime (M) is a prime number of the form M = 2^p - 1, where p is another prime number. <https://www.mathworks.com/matl...

約11年前

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Mersenne Primes
A Mersenne prime is a prime number of the form M = 2^p - 1, where p is another prime number. For example, 31 is a Mersenne prim...

約11年前

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Scrabble Scores
Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

約11年前

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Chess performance
After Problems <http://www.mathworks.com/matlabcentral/cody/problems/3054-chess-elo-rating-system/ 3054> and <http://www.mathwor...

約11年前

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Chess probability
The difference in the ratings between two players serves as a predictor of the outcome of a match ( <http://en.wikipedia.org/wik...

約11年前

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Chess ELO rating system
The Elo rating system is a method for calculating the relative chess skill levels of players in competitor-versus-competitor gam...

約11年前

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I have a for loop that makes one particle take 1000 random steps. How do i make this happen for 1000 particles?
This is a 2D random walk, and it helps to use variable names that reflect this. It is more efficient to generate a lot of random...

約11年前 | 0

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How to generate pn-sequence in matlab?
You might not have to reinvent the wheel. If you have the Communications Toolbox, you could use <http://www.mathworks.com/help/c...

約11年前 | 0

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covariance of 3 D matrix
Probably what you need is in this discussion of <http://www.mathworks.com/help/mbc/mbccommandline/covariance.html covariance>.

約11年前 | 1

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Expression or variable?
Test if arguments of the function are all variables (workspace variables names). Return 1 if yes, 0 if no. For example : ...

11年以上前

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For loop of distance equation returning a confusing output
When something is going wrong, it's a good idea to look at the intermediate results. You could use the <http://www.mathworks.com...

11年以上前 | 1

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Attempt to reference field of non-structure array.
Suppose we start with the example from your link: array = [12 1 10 2 7 11 4 14 5 0 9 15 8 13 6 3]; To eliminate the zero...

11年以上前 | 0

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Implicit system not working
Guillaume, sorry that it has taken so long for someone to respond. If your goal is to find beta and theta for each value of ...

11年以上前 | 0

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Indexing error in function code.
You'll get the same error with this code snippet: h = logical([1 0]); B(2*h) or, for that matter, just B(0) T...

11年以上前 | 1

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Solving 4 equations and 4 unknowns - help please
I think that you are misinterpreting the theta-beta-M equation. It does not involve initial and final conditions because the bou...

11年以上前 | 0

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Help me solve this non-linear equation.
Before using MATLAB, you should think about the math. Suppose that |y = x(1)*x(2)|. You are trying to solve sin(y) = 0 cos...

11年以上前 | 2

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What answers should be "Answer of the week"?
Here is another one from a few years back: <http://www.mathworks.com/matlabcentral/answers/5011#answer_7021 this answer> by <htt...

11年以上前 | 0

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Plot ellipse from equation (no foci/axes)
One approach is to use ezplot: ezplot('x^2+y^2-4*x-8*y+10-2*log(2)') By default, this plots over the domain -2π < x < 2π...

11年以上前 | 1

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質問

What answers should be "Answer of the week"?
In MATLAB Answers, many answers are good enough to satisfy the questioner; but some go further. They may take extra care in expl...

11年以上前 | 4 件の回答 | 2

4

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Unfamiliar Vector Index Notation
See <http://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html Matrix Indexing in MATLAB>.

11年以上前 | 0

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How can I document codes and report in MATLAB?
Big topic. You could start with these two videos: * <http://www.mathworks.com/videos/writing-a-matlab-program-69023.html Writ...

11年以上前 | 1

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While loops & multiple variables
Your while condition returns a logical vector, and if any of its components is false the whole thing is false and the loop ends....

11年以上前 | 3

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How do I get an element from a string?
Here is some code that works: vec = {5,6}; S = ['oNTitsr'; 'reaqBtr'; 'sggtalu'; 'imnvomo'; 'nresg...

11年以上前 | 0

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Problem with script in if -else conditions
The problem is that you are testing the entire array at once with your code. If you type D50 > 0.0000625 you get an...

11年以上前 | 1

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Return the indices of max value in a possible 4D array
If you don't know in advance the size of the array, you can create a cell array for the indices with as many elements as there a...

11年以上前 | 1

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Strange behavior on subplots with surf
It appears that |surf| chooses |OpenGL| for the renderer (see <http://www.mathworks.com/help/matlab/ref/figure-properties.html F...

11年以上前 | 1

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解決済み

Hardy-Ramanujan number
Find the first Hardy-Ramanujan number.

11年以上前

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Error using solve command, says input and output are inconsistent?
Are you using the Matlab editor? If so, the orange marks indicate problems with syntax that are causing your problems. For examp...

11年以上前 | 0