In MATLAB a scalar is a variable with one row and one column.
Scalars are the simple variables that we use and manipulate in
simple algebraic equations.
To create a scalar you simply introduce it on the left hand side
of an equal sign.
>> x = 1;
>> y = 2;
>> z = x + y;

MATLAB supports the standard scalar operations using an obvious
notation. The following statements demonstrate scalar addition,
subtraction, multiplication and division.
>> u = 5;
>> v = 3;
>> w = u + v
>> x = u - v
>> y = u * v
>> z = u/v

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