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...

ongeveer 7 jaar ago | 2

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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 ...

ongeveer 7 jaar ago | 2

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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...

ongeveer 7 jaar ago | 1

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...

ongeveer 7 jaar ago | 1

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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...

ongeveer 7 jaar ago | 3

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"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?...

ongeveer 7 jaar ago | 2

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 ...

ongeveer 7 jaar ago | 1

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...

ongeveer 7 jaar ago | 1

Error in quad function-maximum function count exceeded. "Singularity likely" warning when I use the QUADL function in MATLAB

ongeveer 7 jaar ago | 1

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...

ongeveer 7 jaar ago | 2

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-...

ongeveer 7 jaar ago | 1

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

ongeveer 7 jaar ago | 0

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...

ongeveer 7 jaar ago | 2

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 ...

ongeveer 7 jaar ago | 0

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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...

ongeveer 7 jaar ago | 1

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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...

ongeveer 7 jaar ago | 2

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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...

ongeveer 7 jaar ago | 0

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...

ongeveer 7 jaar ago | 0

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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 ...

ongeveer 7 jaar ago | 0

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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.

ongeveer 7 jaar 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 ...

ongeveer 7 jaar ago | 1

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No, INTEGRAL is extremely reliable, much better than QUAD. Please provide me with a complete, running example that demonstrates...

meer dan 7 jaar 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...

meer dan 7 jaar ago | 0

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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...

meer dan 7 jaar ago | 1

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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...

meer dan 7 jaar ago | 0

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...

meer dan 7 jaar ago | 1

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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...

meer dan 7 jaar ago | 0

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Eliminate zero and negative roots by Embedded Matlab Function
The input u is fixed-size, so it is impossible to delete elements from it. Instead, copy it to a variable-size array and then d...

meer dan 7 jaar ago | 0