Approximation By Three-Dimensional q-Bernstein-Chlodowsky Polynomials

In the present paper we introduce positive linear three-dimensional Bernstein-Chlodowsky polynomials on a non-tetrahedron domain and we get their q-analogue. We obtain aproximation properties for these positive linear operators and their generalizations in this work. The rate of convergence of this operators is calculated by means of the modulus of continuity.