Answered
Not enough input arguments.
I try not to do too many homework problems here because in a former life I was a college professor, and I think it's bad for the...

10 years ago | 3

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Answered
why I receive message like this"Warning: Function ishermitian has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict" in Matlab 2014
MATLAB added a new built-in function called ishermitian in 2014a. Apparently you have one of your own on the path. Type "which...

10 years ago | 2

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Answered
Why Embedded coder generates include to standard C library (<stddef.h> and <string.h>)? How to remove theese includes?
I know next to nothing about it, but perhaps use the CRL (Code Replacement Library) to replace the standard memset with one that...

10 years ago | 1

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integration of a multiple anonymous function
So if your function g works with a scalar value of c, then you need to vectorize it. You'll have the same problem if you do som...

10 years ago | 2

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Answered
INTEGRAL AT THE AREA
First define a function. This function must be able to accept an array and return an array. That is to say, if y1 = f(x1) and ...

10 years ago | 2

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Answered
avoid imaginary numbers in probabilistic calculation
You haven't told me how you got them, so I can't tell you how to avoid them. Most likely your calculations before calling expin...

10 years ago | 1

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How to write a function and create 3 nested loop then evaluate an integral?
I'm not sure if there is supposed to be a relationship between the t intervals and rho, or whether the fact that there are 15 ro...

10 years ago | 1

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Answered
Integration numerical with variable limits
The INTEGRAL2 interface is set up to calculate an iterated integral where the integral over the second argument of the integrand...

10 years ago | 3

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Answered
"lsqnonlin" constantly stopped for failing to integrate numerically
Is it possible that your problem is singular or highly oscillatory inside the interval of integration for some parameter values?...

10 years ago | 2

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calculating the integral with dummy variables
A "dummy" variable is a variable that is integrated out of the equation. All definite integrals use "dummy" variables in their ...

10 years ago | 1

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How to determine order and time step size of ode15i
ODE15i is variable-step and variable-order, so "the" step size and "the" order used would each be sequences as long as the numbe...

10 years ago | 1

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Error in quad function-maximum function count exceeded. "Singularity likely" warning when I use the QUADL function in MATLAB
Is there some important reason why you are using INTEGRAL, QUAD, and QUADL, all three? QUAD and QUADL are deprecated. Use INTE...

10 years ago | 2

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ode45 failing to produce a sensible solution
I somewhat disagree with Jan's conception of the limitations of the code. They should be able to handle non-smoothness. Jump d...

10 years ago | 2

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Matlab integration error: Integrand output size does not match the input size
When you see that error, it means that you used a / instead of ./ . The integrator passed in an array for "vectorized" element-...

10 years ago | 1

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Help on double integral
ffull = @(k,theta,phi)cos(k.*sin(theta).*cos(phi)); qscalar = @(kscalar)integral2(@(theta,phi)ffull(kscalar,theta,phi),0,...

10 years ago | 0

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Strange error using quad2d
I don't know when it will finish, but I made this adjustment to properly vectorize the Fw function (QUAD2D can't accept an array...

10 years ago | 2

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problem with for and function inside other function
Do not use QUAD. Use INTEGRAL. If you don't have INTEGRAL because your version of MATLAB is too old, use QUADGK. Functions ...

10 years ago | 0

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Answered
how can I evaluate a four fold integral with four variables numerically ?
There's one thing that people often find difficult: the requirement that the integrand accepts arrays and returns arrays, opera...

10 years ago | 1

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Answered
Evaluate numerical Integral by generating function
This bl = @(ln1, ln2) bl+pro; is syntactically wrong. The operation + is not defined on function handles. You need to...

10 years ago | 2

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Answered
Help on User Defined Function
Sorry we missed this question. The problem is that colon expression lengths are tricky business in MATLAB because the end point...

10 years ago | 0

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Multiple integrals with limits as variables
function_of_scalar_z_only = @(z)integral2(@(w,l)f(z,w,l),0,L,0,@(w)w); g = @(z)arrayfun(function_of_scalar_z_only,z); De...

10 years ago | 0

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Answered
Error in port widths or dimensions
OK, x is just a scalar. Now how about z, beta, xo, zo, k, x_ba, and z_ba? Assuming they are all scalars, when I run this code ...

10 years ago | 0

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Answered
Inf and NaN entities in C-code when using Matlab Coder
Ryan's comment is the answer to this question. The initialize function must be called.

10 years ago | 0

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solve in simulink using matlab function block
Keep in mind that extrinsic functions are calculated by calling out to MATLAB, and what comes back is an mxArray which can't be ...

10 years ago | 1

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Inconsistency using integral versus quad?
No, INTEGRAL is extremely reliable, much better than QUAD. Please provide me with a complete, running example that demonstrates...

10 years ago | 0

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ODE method issue in matlab
If the derivative odefun(t,y) depends on the four "control" functions of t (or even of both t and y), then these functions would...

10 years ago | 0

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Answered
Integrate function that calls a function
Except when computing array-valued integrals, the INTEGRAL function requires that the integrand function be coded to accept _arr...

10 years ago | 1

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Answered
integrate multivariable function with infinity bounds?
This is not how to compute a quadruple integral. See, for example, my answer here: http://www.mathworks.in/matlabcentral/ans...

10 years ago | 0

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Geting error while using quadgk for quadruple integral
If you want to integrate a function of 4 variables, f(theta1,theta2,w,z), try iterating it as a single integral of a triple inte...

10 years ago | 1

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Answered
normrnd, normpdf, pdf not working for code generation
If you're using 2013a or earlier, they aren't supported. If you're using 2013b or later, they are supported. You'll need the o...

10 years ago | 0

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