We can view the variables currently in the Workspace by typing

» who Your variables are: ans x y z leaving 621420 bytes of memory free.

More detail about the size of the matrices can be obtained by typing `whos.`

We can find the size of a matrix or vector by typing

» [m,n]=size(x) m = 1 n = 6

where `m` represents the number of rows and `n` represents the number of columns.

If we do not put place arguments for the rows and columns, we find

» size(x) ans = 1 6

Since `x` is a vector, we can also use the length command

» length(x) ans = 6

It should be noted that MATLAB is case sensitive with respect to variable names. An `X` matrix can coexist with an `x` matrix.

Sometimes it is desirable to clear all of the variables in a ...

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