已回答
effects of ifft2(x, 'symmetric') while x is not conjugate symmetric
It appears that only portions of the input matrix are used when 'symmetric' is specified on input to ifft2 and the input is 2D ...

5 months 前 | 1

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insAccelerometer Documentation h(x)
My take on this ... The equations in the code make sense assuming (1) the accelNav vector, which I assume (2) is a filter state...

5 months 前 | 1

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Error with Calling "dcmecef2ned" in Simulink
Hi Richard, In which version did it used to work? I'm assuming you're calling dcmecef2ned from inside a MatlabFunction block? ...

6 months 前 | 0

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Having trouble solving an equation
syms x eqn = sqrt(((((26892/(x)^3)+(254.7/(x^2)))/2)^2)+(6111.5/((x)^3))^2) == 19000; expand(eqn) solve is telling it can't f...

6 months 前 | 0

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提问

Does Symbolic Math Toolbox Formally Support Function Composition?
The doc page Create Symbolic Functions states "The Symbolic Math Toolbox™ currently does not support composite symbolic function...

6 months 前 | 1 个回答 | 0

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Wrap part of a shape with a surface
Hi Robert, Perhaps something like this that draws a pathc between each height line? Salt to taste on the patch command. Is th...

6 months 前 | 0

| 已接受

已回答
Weird behavior with Three-axis Inertial Measurement Unit
"Is the purpose of the IMU to simulate a real-life IMU, or something else?" The purpose of that model is to simulate a notional...

6 months 前 | 0

| 已接受

已回答
Newtonian Mechanics vector solution needed to find the range of forces (P) that satisfy Fnetx = 0
Here is an algebraic solution; I suspect one could do the whole thing symbolically and then sub the numbers at the end. Note th...

6 months 前 | 0

已回答
Bode plot with right half plane zero
Hi @Anindya, The bodeplot function offers options on controlling the appearance of the plot, including to force the phase betwe...

6 months 前 | 1

提问

Why is Answers Now Showing "Ran in" Links?
AFAICT, the "ran in" link is just a link to the same question.

6 months 前 | 1 个回答 | 0

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提问

Why Doesn't a Symbolic Matrix Equation Simplify Until After Applying subs() ?
Following code is to derive an expression for the derivative of the magnitude of a vector function of time. clearvars syms t r...

7 months 前 | 1 个回答 | 0

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Obtaining the differential equations from graphical representation of the problem
One can implement the equations of motion in Simulink and then use linearize to get the differential equation, but that requires...

7 months 前 | 0

提问

Is Assignment from symmatrix/symfunmatrix Consistent with Assignment from sym/symfun ?
I've just started using symmatrix and symfunmatrix and noticed a behavior that I don't understand and seems to be inconsistent w...

7 months 前 | 0 个回答 | 1

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提问

How Does the 'All' Option Affect the Result of Symbolic simplify?
Start with a simple expression syms alpha beta real f = cos(beta)-cos(beta)*cos(alpha)^2 and try to simplify it: simplify(f)...

7 months 前 | 1 个回答 | 0

1

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RC Circuit Simulation in Simulink Shows Incorrect Charging Time
Hi Xiaolong, Disclosure: I did not actually open your model. If you know the fastest system dynamics are on the order of 1e-6,...

7 months 前 | 0

Discussion

It is Time for the Symbolic Math Toolbox to Include dot and cross Functions
Edit 15 Oct 2025: Removed incorrect code. Replaced symmatrix2sym and symfunmatrix2symfun with sym and symfun respectively (latte...

7 months 前 | 0

已回答
Gibbs-like behaviour with lowpass on long signals
Hi qfn, I think that lowpass, et. al. will result in transients due the large, effective steps at the endpoints. I think this ...

7 months 前 | 0

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What frame of reference is the CG input to the IMU in Aerospace pack?
Hi Mats, According to IMU Location the CG input is to be provided in a coordinate frame that is fixed to the body. However, the...

7 months 前 | 0

已回答
Indexing based on part of a string
column1 = [1;2;1;2;1]; column2 = ["2025-02 A";"A 2025-02";"B";"a 2025-02 a";"b 2025-02 b"]; T = table(column1,column2) T(T.col...

7 months 前 | 1

| 已接受

已回答
Run multiple Simulink model in parallel
Check out Run Multiple Simulations and links therefrom.

7 months 前 | 2

Discussion

Will Disucssions Front End be Updated to be Consistent with Back End?
Apparently, the back end here is running 2025b, hovering over the Run button and the Executing In popup both show R2024a. ver m...

7 months 前 | 0

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ilaplace doesn't handle tanh()
Hi Marcel, I attempted to recreate the example with the information provided, but got a different result. syms s syms T posit...

8 months 前 | 1

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Control System Designer: Inconsistent Controller Output Step Response
I can recreate these result and uc/r certainly looks incorrect. After exporting the systems to the base workspace I get: >> tf(...

8 months 前 | 0

| 已接受

已回答
tf2sos input argument
Hi Nicolai, As far as I know, discrete time transfer functions in the Signal Processing Toolbox (SPT), whether b/a or sos form,...

8 months 前 | 1

| 已接受

已回答
iztrans not giving correct result?
syms z n The fact that the default value for heaviside(0) = 1/2 doesn't matter here, but should be kept in mid in general. x...

8 months 前 | 0

提问

What Is the Behavior of Symbolic nchoosek With n < 0 ?
According to nchoosek:Algorithms "If k < 0 or n – k < 0, nchoosek(n,k) returns 0." syms n k f(n,k) = nchoosek(n,k) Using the...

8 months 前 | 1 个回答 | 1

1

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Analytic solution of quatric polynomial does not add up
Hi thejinn1314, simplify-ing the general solution with IgnoreAnalyticConstraints might be useful, though perhaps could cause so...

8 months 前 | 0

| 已接受

提问

Why Does Answers Run Code in 2025a But the Run Button, the "Executing In" Popup, and the "Ran In" Tag Still Show 2024b?
ver

8 months 前 | 1 个回答 | 3

1

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已回答
Numerical precision issues when using tf('s')
I thin the general recommendation is that zpk is superior to tf, and that ss is superior to both. See Using the Right Model Repr...

8 months 前 | 1

| 已接受

提问

How Do Assignment and Deletion Work with an Empty Index on the Left Hand Side ?
I've always thought that indexing with an empty array on the LHS of an = is a no-op for the variable on the LHS (there could be ...

8 months 前 | 1 个回答 | 0

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