minus

 -   Minus. 
    X - Y subtracts matrix Y from X. X and Y must have compatible sizes. In
    the simplest cases, they can be the same size or one can be a scalar.
    Two inputs have compatible sizes if, for every dimension, the dimension
    sizes of the inputs are either the same or one of them is 1.

    C = MINUS(A,B) is called for the syntax 'A - B' when A or B is an object.

    See <a href="matlab:helpview('matlab','MATLAB_OPS')">MATLAB Operators and Special Characters</a> for more details.

    Documentation for single/minus
       doc single/minus