How to plot chebyshev polynomial in matlab

I have a chebyshev function T with all coefficient a,....i

F(x1,y1)=(a+dT1(x1 )+eT1(y1 )+hT2(x1)+iT2(y1))/(1+bT1(x1)+cT1(y1)+fT2(x1)+gT2(y1)). How do I plot this in matlab. In chebyshev x1<= 1 and |y}<=1.

Thanks in advance