Discrete time signal defining

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Nurhan Aydinalp
Nurhan Aydinalp 2021-1-7
回答： Shadaab Siddiqie 2021-4-14
I am trying to define a discrete time in which n = [-5:1:5] and the values of x[n] should be 1 2 3 4 5 6 5 4 3 2 1 I have the following code
syms x(n) n h(n) y(n)
n = (-5:1:5);
x(n) = [1 2 3 4 5 6 5 4 3 2 1];
plot(x(n),n)
But When I run this I get the following error:
Error using sym/subsasgn (line 963)
Invalid indexing or function definition. Indexing must follow MATLAB indexing. Function arguments must be
symbolic variables, and function body must be sym expression.

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回答（1 个）

Shadaab Siddiqie
Shadaab Siddiqie 2021-4-14
From my understanding you are getting an error for the above code. This is because you are assigning non symbolic variables to a symbolic variable in line :
x(n) = [1 2 3 4 5 6 5 4 3 2 1];
Please refer syms for more information.

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