MATLAB: Expand summations with different indexes symbolically

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Will MATLAB expand summations with different indexes symbolically like this one?

Best Answer

MATLAB does not offer a ∑ operator.

MATLAB offers sum(), which when applied to numeric values, just adds the values.

If you have the Symbolic Toolbox, then can sum() a symbolic expression that has a symbolic subscript; the result will be expanded if it is simple enough.

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MATLAB: Trouble substituting a value into a symbolic expression for use with fplot

The command fplot only takes function handles, not symbolic objects. The easiest way to plot symbolic objects is using ezplot:

 ezplot(g,[-5 5])

If you want to use fplot, you can use the command matlabFunction to convert the symbolic object into a MATLAB anonymous function:

 fplot(matlabFunction(g),[-5 5])

MATLAB: How to write a symbolic variable funtion

hi,

No the notation f(x) is used in other programming languages ,try :

 syms x 
 f=[x x^2;x^3 x^4]
 % automatically f is f(x)

here is second example :

 syms x y
 F=[cos(x) sin(y); -sin(y) cos(x)];

Best Answer

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MATLAB: Trouble substituting a value into a symbolic expression for use with fplot

MATLAB: How to write a symbolic variable funtion

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