Note that the domain of function y = √ 1-lg (x-1) is set a, and the domain of function y = √ 3 * 3-x-3 is set B. find a ∩ B

Note that the domain of function y = √ 1-lg (x-1) is set a, and the domain of function y = √ 3 * 3-x-3 is set B. find a ∩ B

1-lg (x-1) > = 0 X-1 > 0 3 * 3-x-3 > = 0 find the solution of these three inequalities, and then find the intersection