function polyDraw(A,xmin,xmax,color)
x = linspace(xmin,xmax,100);
y = zeros(size(x));
for ix=1:size(x,2);
y(ix) = polyCompute(A,x(ix));
end
plot(x,y,color);

function y = polyCompute(A,x)
numCoeff = size(A,2);
vX = zeros(1,numCoeff);
for ix = 1:numCoeff
    vX(ix) = x^(ix-1);
end
y = sum(A.*vX);