Answered
Why doesn't this code solve the equation?
Answered in <http://www.mathworks.com/matlabcentral/newsreader/view_thread/347804?s_cid=ans2doc_man_link http://www.mathworks.co...

ongeveer 7 jaar ago | 0

Answered
Display a variable and its units
Units are now in MATLAB if you have Symbolic Math Toolbox. Try this, and see the tutorial: <https://www.mathworks.com/help/symbo...

ongeveer 7 jaar ago | 0

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Answered
How to add units to a number and differentiate between different inputs
Units are now in MATLAB if you have Symbolic Math Toolbox. Try this, and see the tutorial: <https://www.mathworks.com/help/symbo...

ongeveer 7 jaar ago | 0

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Answered
how to set a unit to variable?
Units are now in MATLAB if you have Symbolic Math Toolbox. Try: >> u = symunit; >> x = 2*u.meter x = 2*[m] ...

ongeveer 7 jaar ago | 3

| accepted

Answered
Usage of roots and solve in MATLAB
1. To understand the difference between numeric and symbolic arithmetic, please see: <https://www.mathworks.com/help/symbolic/ch...

ongeveer 7 jaar ago | 1

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Answered
Jacobian of equation with left and right hand sides
Starting R2017a, The "lhs" and "rhs" functions are available. See: <https://www.mathworks.com/help/symbolic/lhs.html?s_cid=an...

ongeveer 7 jaar ago | 0

Answered
How to arrange equation variable on right and left hand side?
Starting R2017a, use the "isolate" function: <https://www.mathworks.com/help/symbolic/isolate.html?s_cid=ans2doc_man_link https:...

ongeveer 7 jaar ago | 2

Answered
How to plot the symbolic expression given by "root"
If I understand correctly, you're asking " _How can I automatically substitute values into a symbolic expression?_". Use the sub...

ongeveer 7 jaar ago | 0

Answered
Error using integral: A and B must be floating-point scalars
To represent integration with symbolic variables, use "int" instead of "integral". <https://www.mathworks.com/help/symbolic/i...

ongeveer 7 jaar ago | 0

Answered
Create a general function or script, where the user can specify the number of variables, which is both symbolic and possible to evaluate with fminunc?
* To use fminunc, first convert the Symbolic function to a MATLAB function using <https://www.mathworks.com/help/symbolic/matlab...

ongeveer 7 jaar ago | 0

Answered
Help with piecewise function? Can't use else/if?
If you have R2016b, you can just use the piecewise function: <https://www.mathworks.com/help/symbolic/piecewise.html?s_cid=ans2d...

ongeveer 7 jaar ago | 0

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Answered
How to define ranges for solutions in this example
To specify ranges for multiple variables, see the last example on <https://www.mathworks.com/help/symbolic/solve-equations-numer...

ongeveer 7 jaar ago | 1

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Answered
help to fix this numeric symbolic array
You can't have a "numeric symbolic" array because "numeric" and "symbolic" are different data types. For your options, see <http...

ongeveer 7 jaar ago | 0

Answered
Error using FEVAL Produced on an Attempt at calling fplot
First, a side note that you should format code in your posts: <https://www.mathworks.com/matlabcentral/answers/13205-tutorial-ho...

ongeveer 7 jaar ago | 1

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Answered
How to convert strings to symbolic expressions without sym()?
Why do you need to convert strings to symbolic expressions? EDIT: Starting R2017b, use <https://www.mathworks.com/help/symbolic/...

ongeveer 7 jaar ago | 1

Answered
How can I compute Jacobi Elliptic Functions in Matlab where the modulus is > 1?
Starting R2017b, all Jacobi Elliptic functions in MATLAB with Symbolic Math Toolbox. Example: >> jacobiCD(1,3) ans = ...

ongeveer 7 jaar ago | 0

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Answered
How to calculate imaginary part of incomplete gamma function in matlab.
You can find "gammainc" for imaginary input values using the Symbolic "igamma" function. Carefully read the note in the "Descrip...

ongeveer 7 jaar ago | 1

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Answered
Matlab Numerical integral improvement
Updated answer for R2017b. Use <https://www.mathworks.com/help/symbolic/int.html?s_cid=ans2doc_man_link int> and convert the sym...

ongeveer 7 jaar ago | 1

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Answered
symb toolbox newby?
Please start with the Symbolic Getting Started: <https://www.mathworks.com/help/symbolic/getting-started-with-symbolic-math-tool...

ongeveer 7 jaar ago | 0

Answered
Symbolic math solve numeric approximation
Question: When does the Symbolic Math "solve" statement try to find a numeric approximation? "solve" tries to find a symbolic...

ongeveer 7 jaar ago | 0

Answered
How to combine numerator and denominator in original form
The answer is in this example on the sym doc page: <https://www.mathworks.com/help/symbolic/sym.html#bu7u7ur-6?s_cid=ans2doc_man...

ongeveer 7 jaar ago | 0

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Answered
How do I convert a string input to an executable equation?
For symbolic equations, starting R2017b, use <https://www.mathworks.com/help/symbolic/str2sym.html?s_cid=ans2doc_man_link str2sy...

ongeveer 7 jaar ago | 1

Answered
symbolic evaluation where function is obtained from user input text
Starting R2017b, use <https://www.mathworks.com/help/symbolic/str2sym.html?s_cid=ans2doc_man_link str2sym>. >> prompt = 'in...

ongeveer 7 jaar ago | 2

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meer dan 7 jaar ago | 0

Answered
Can't find explicit solution
You can check Walter's suggestion that the solution is in limits as >> limit(dLdb,b,0) ans = NaN >> limit(dLdy0,b,...

meer dan 7 jaar ago | 1

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Answered
Integral of a gaussian function wrong answer
I could get the algebraic answer but it required calling "simplify" twice. Need to investigate this further. >> syms x A ...

meer dan 7 jaar ago | 0

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Answered
How to work with piecewise results that are returned by the solve() function
Honestly, the simplest solution is to upgrade to at least R2016b where "piecewise" was introduced in Symbolic Math Toolbox. Othe...

meer dan 7 jaar ago | 0

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Answered
How to find the derivative of the function at some value of x?
To differentiate a function and then find the value, use symbolic functions. For details, see <https://www.mathworks.com/help/sy...

meer dan 7 jaar ago | 5

Answered
Optimizing program to get faster results
Following up on my comment above: 1. Do not overwrite symbolic variables with numeric values. So don't do syms B D an...

meer dan 7 jaar ago | 0

Answered
How can I solve A*X + X*B = C equation for X? where A, B&C are 2*2 matrixes.
You can solve this with the symbolic toolbox if you declare "X" as a matrix: >> X = sym('x%d',[2 2]) X = [ x11, x12] ...

meer dan 7 jaar ago | 0