LTERM _ _ _ _ _ _ _ _ _ _ _ _ operator

The lterm operator returns the leading term of an expression with respect to a kernel. The expression is returned if it does not depend on the kernel.

syntax:

lterm(<expression>,<kernel>)

<expression> is ordinarily a polynomial. If ratarg is on, a rational expression may also be used, otherwise an error results. <kernel> must be a kernel.

examples:

lterm((x+2*y)**6,y); 

      6
  64*Y  


lterm((x + cos(x))**8 + df(x**2,x),cos(x));
			 


        8
  COS(X)  


lterm(x**3 + 3*x,y); 

   3
  X  + 3X