Answered
How to find eigenvalues and eigenvectors without using built-in functions (Ex. eig)?
Without using any built-in functions? It depends -- do you consider the commands used in MEX-files to be built-in functions? In ...

5 years ago | 0

Answered
How can I surface plot a 1000x2 matrix?
What does the data represent? X and Y coordinates of the points? If so where's the Z data? Or do you have a long, thin sheet of...

5 years ago | 0

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Symsum returns symbolic expression instead of value
What makes you believe that this summation converges? syms m f = sinh(16*pi*m/3)./sinh(4*pi*m/3); fplot(f, [0 10]) This term...

5 years ago | 0

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Answered
Single prompt for large set of variables
How huge is the "huge set of variables"? If your function requires the user to enter hundreds or thousands of values, I would ad...

5 years ago | 0

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showing hours elapsed not date and time data
How are you importing this data from Microsoft Excel? See if the function or technique you're using to import the data can impor...

5 years ago | 0

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computing function with a variable
%{ x0=[1;2;3;4]; d0=[1118,-124,-502,-1090]; F=(x1-10*x2)^2+5*(x3-x4)^2+(x2-2*x3)^4+10*(x1-x4)^4; %} F is not a function. As...

5 years ago | 0

Answered
Not enough input arguments
You need to call your function with two input arguments. You've called it with zero or one.

5 years ago | 0

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Missing data with a time range
retime your timetable to a regular time basis.

5 years ago | 0

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Answered
Why isn't my code working because of delimeters?
10(t(n)+1) is not valid syntax in MATLAB. You need to explicitly perform the multiplication, 10*(t(n)+1).

5 years ago | 0

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Answered
Change the zeros to ones and the ones to zeros.
Let's look at V after the second and third steps: V = [ 1, 1, 1, 1, 0, 1, 0, 1] V(V==0) = 1 V(V==1) = 0 You want to record w...

5 years ago | 1

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Answered
Values from workspace change
Home is an int8 array. When you combined the int8 data with the double data, the double data was converted to int8. See this doc...

5 years ago | 0

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Answered
The same script works perfectly on Matlab and does not on app designer
My guess is that when you call the function in the Command Window or script you're calling it on scalar data but when you call i...

5 years ago | 0

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Answered
Error using sym/subindex (Bessel function)
syms k t = 0:1:100; rho = 1000; mu = 0.001; dp = 1; R = 0.05; l = 1; ram = besselzero(0,11); Since you haven't showed us...

5 years ago | 0

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Error using plot Data must be numeric, datetime, duration or an array convertible to double
Let's look at what you're trying to plot. x=[1680 1190 841 595 420 297 210 149 105 74.4 52.5 37.2 26.3 18.6 13.1 9.29 6.57 4.6...

5 years ago | 0

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How to use indexed function output as a function of original inputs?
Dot notation is indeed not defined for function handles. You can't do: f = @sin; % Commenting this code that would error so th...

5 years ago | 0

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Answered
How can I join unequal vectors by adding NaN values?
The NaN function (along with inf, zeros, and ones) behaves in a way that will help you. Negative sizes are treated as 0. a = Na...

5 years ago | 0

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How can I solve the issue showing the error " Wrong use of the `max` data type is invalid". "The first argument must be a numeric or logical value" in matlab
The max function is not defined for cell array inputs. If it were, what would you expect the result of max to be if called on th...

5 years ago | 1

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Answered
Help with simple bisection method function while loop
Let's say your function was: f = @(x) -x.^2; and your tolerance was 1e-6. Is the tolerance satisfied if I evaluate f at x = 1?...

5 years ago | 0

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Matlab Bisection Algorithm code
This bisect(sin(x),pi/2,1.5*pi,10^-6,100) attempts to call the sin function with the contents of the variable x as input and u...

5 years ago | 1

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Answered
error: Array indices must be positive integers or logical values.
m=(1/((kw(di)^2 ... There's no such thing as element 0.05 of an array in MATLAB. Perhaps you're missing a multiplication sign t...

5 years ago | 0

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Unwanted negative solution with ode solver
Either: specify the NonNegative option using odeset to control which components of the solution are not allowed to become negat...

5 years ago | 0

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Multi Dimension Matrix Elements multiplication
If you're using release R2020b or later, see the pagemtimes function.

5 years ago | 0

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ode45: use span of length 2
If you want to only evaluate the solution of your ODE at a specific set of times even if that set of times has only two elements...

5 years ago | 0

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Error: File: centraldiff.m Line: 1 Column: 11 Unbalanced or unexpected parenthesis or bracket
When you define your function, the function declaration line should include the names of the variables into which the input argu...

5 years ago | 0

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Answered
Making animatedlines that dynamically change linestyle depending on conditions
h = animatedline('LineStyle', '-'); axis([0 360 -1 1]) for x = 0:360 if mod(x, 30) == 0 addpoints(h, NaN, NaN); ...

5 years ago | 0

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Answered
Versions at End-of-Life
See the Road Map on the system requirements page. If there is a specific release and operating system combination not on that l...

5 years ago | 0

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Multiply Even Variables in an Array
Hint: use logical indexing twice in the onle line of code that performs this replacement.

5 years ago | 0

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Time difference in 'HH:mm:ss,SSSSSS' format
t0 = '15:30:25,123456' t1 = '16:45:30,123457' theFormat = 'hh:mm:ss.SSSSSS'; timeStart = duration(replace(t0, ',', '.'), 'I...

5 years ago | 1

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Answered
error in using the function fsolve to find steady state
Don't try using a numeric solver like fsolve on a function that returns symbolic answers. Use the solve function from Symbolic M...

5 years ago | 0

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What are symbolic variables in MATLAB? How they are different from normally used variables?
Symbolic variables are instances of a class provided as part of Symbolic Math Toolbox. That documentation for MATLAB does not li...

5 years ago | 2