Can someone help me give me the answer and explanation plz

What’s the domain of this function? fastttt

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Need this asap if anyone can i would be very grateful. if you could show workings that would really