sym and syms

what is the use of sym and syms and what are their differences?

Answer 1

[Paulo Silva]

syms is a shortcut to the function sym, it makes it easier for the user to create symbolic variables.

Example:

x=sym('x');
y=sym('y');

Using the shortcut syms you do the same thing just with the code:

syms x y

[Dwyane Wade]

what's the purpose of using them?

[Paulo Silva]

Symbolic variables aren't constants like regular variables, you don't assign any value to them, you can use them to solve expressions using functions from Symbolic Math Toolbox™, for example:

syms a b c x

solve(a*x^2+b*x+c) %finds the roots of the quadratic expression

%Notice the results, it's the quadratic formula/equation

Answer 2

[Dean WANG]

sym only define one variable,but syms can define more