The  type(a, SDMPolynom) calling sequence checks that a is an SDMPolynom.

The parameter a is a polynomial in all of its indeterminates.

Note:  The command SDMPolynom has been deprecated.  A sparse distributed data structure is used by default for polynomials and is often more efficient than SDMPolynom. For information on creating and working with polynomials, see polynom.

$\mathrm{type}\left(\mathrm{SDMPolynom}\left(x^2+y-z\,\left[x\,y\,z\right]\right)\,\mathrm{SDMPolynom}\right)$

$\mathrm{true}$

$\mathrm{type}\left(\sin \left(x\right)+y\,\mathrm{SDMPolynom}\right)$

$\mathrm{false}$

$\mathrm{type}\left(\mathrm{SDMPolynom}\left(\sin \left(x\right)+y\,\left[\sin \left(x\right)\,y\right]\right)\,\mathrm{SDMPolynom}\right)$

$\mathrm{true}$

$\mathrm{type}\left(\mathrm{SDMPolynom}\left(f\left(1\right)x+2^{\frac{1}{2}}\,x\right)\,\mathrm{SDMPolynom}\right)$

$\mathrm{true}$