Answered
CAT arguments dimensions are not consistent while using eval command of symbolic jacobian
Don't use |eval| on syms. Preferably, don't ever. Better use |subs| as in q = double(subs(jacobian(f), {x1, x2}, {x(:,1), x...

11 years ago | 0

Answered
Using a mupad plot command from the Matlab console
No, MuPAD plot commands only work in the MuPAD Notebook Interface.

11 years ago | 0

Answered
How to shade an area bound by 2 curves in an ezplot?
You can get the x and y data from a plot and then use |fill| or |patch|, although it is not necessarily straightforward and you ...

11 years ago | 2

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Answered
Local extreme values for a differential equation, using solve?
I think they are correct, the solution is just not complete, since it was computed numerically. You could try |solve(simplify...

11 years ago | 0

Answered
Problem with parameterized solutions and evalin symengine error
>> vpasolve(sqrt(sum(M.^2))./(0.2*9.80665)==2,t,[0,pi/2]) ans = 1.3371348850567568969524166439585 Note that...

11 years ago | 0

Answered
how to plot Ilaplace results
I don't know what exactly you mean by “a numeric Ilaplace(f(s)),” but you can numerically approximate the constants in the trans...

11 years ago | 1

Answered
OOP in Matlab - What to do when the output is a different class following method?
Happens to work for me, in 2013a, but I think that is not the point, as that is probably coincidental for this particular exampl...

12 years ago | 1

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Answered
Please Help - Explicit integral could not be found
syms w positive acf = simplify(acf); ws = 0:1e-9:1e-7; plot(ws, double(subs(acf, w, ws))); or, probably better, si...

13 years ago | 0

Answered
Defining/Checking assumptions on symoblic arrays
The name inside MuPAD is not |A(1,1)|. Try this instead: A = sym('A%d%d', [2 2]); A = sym(A, 'positive'); feval(symen...

13 years ago | 0

Answered
Isolate Coefficients of Multivariate Linear Polynomial
syms x r eqn = r - 2*x +7/4 coeffs(eqn, [x, r]) ans = [ 7/4, 1, -2] Note that |coeffs| returns the coeffi...

13 years ago | 0

Answered
Substitute 3 variables in this symbolic equation
And then, there's always >> [X, Y, W] = ndgrid(5:5:30, 1100:100:1500, 1:0.5:3); >> subs(Wnet, {x, y, w}, {X, Y, W}) ...

13 years ago | 1

Answered
Substitute 3 variables in this symbolic equation
Or, expanding on the thing you have: >> syms x y z >> f = 3*x + 2*y + z; >> subs(subs(subs(f, x, 1:4), y, (1:3)...

13 years ago | 0

Answered
Integrating piecewise function
When integrating from |a| to |x|, |int| makes the implicit assumption that |a ≤ y ≤ x| and thus |a ≤ x|, unless that is obviousl...

14 years ago | 0

Answered
MUPAD: plotting the intersection of two functions
For the special case of intersecting with an axes-parallel plane, it may be worth checking out the second example in the documen...

14 years ago | 0

Answered
How to get companion system in Mupad
I am not sure what the companion system of a system of differential equations would be, the definition does not, in my opinion, ...

14 years ago | 0

Answered
Define a function for a system using Symbolic Math Toolbox
For the symbolic toolbox, you probably should use explicit |sym| calls, as in the following: >> syms t z >> evalin(sym...

15 years ago | 2

Answered
How to solve this differential equation
MATLAB: >> dsolve('D2y + y = x^2', 'x') ans = C10*cos(x) + C11*sin(x) + x^2 - 2   MuPAD: sol...

15 years ago | 1

Answered
Solving symbolic equations that contain numeric integration
1. About integration: after integration, I need to get a function that still has several unknown parameters. should I use symbo...

15 years ago | 0