cmb_lin
=======

symbolic linear combination



Calling Sequence
~~~~~~~~~~~~~~~~


::

    [x]=cmb_lin(alfa,x,beta,y)




Description
~~~~~~~~~~~

Evaluates `alfa*x-beta*y`. `alfa, beta, x, y` are character strings.
(low-level routine)



See Also
~~~~~~~~


+ `mulf`_ symbolic multiplication
+ `addf`_ symbolic addition


.. _addf: addf.html
.. _mulf: mulf.html