To update your code, call syms and specify the symbolic scalar variables whose assumptions you want to clear. For example, syms x clears all assumptions applied to x.

Use syms to create a symbolic variable that is assigned to a MATLAB variable with the same name. You get a fresh symbolic variable with no assumptions. If you declare a variable using …

syms a b c A = [a b c; c a b; b c a] A = [ a, b, c] [ c, a, b] [ b, c, a] Since matrix A is circulant, the sum of elements over each row and each column is the same.

They must be accessed using the output argument that contains them. Alternatively, to use the parameters in the MATLAB workspace use syms to initialize the parameter. For example, if …

You can use the syms command to clear variables of definitions that you previously assigned to them in your MATLAB session. syms clears the assumptions of the variables. These …

To create several symbolic variables in one function call, use syms. Using syms also clears assumptions from the named variables.

syms X [2 1] matrix syms A [2 2] matrix Create two symbolic matrix functions to represent the functions F ( X , A ) and ∂ F ( X , A ) / ∂ X T . When creating the symbolic matrix functions, …

Use syms to create a symbolic variable that is assigned to a MATLAB variable with the same name. You get a fresh symbolic variable with no assumptions. If you declare a variable using …

For further computations, clear the assumption on x by recreating it using syms.

Symbolic functions represent math functions. Use symbolic functions for differentiation, integration, solving ODEs, and other math operations. Create symbolic functions by using syms.