Question 883920
Find the domain and range of the function. 
1.f(x)= 3sinx 
domain: all real numbers: (-∞,∞)
range: [3,-3]
..
2.f(x)= 2/x-1
domain: x≠1 (-∞,1) U (1,∞)
(x-1)=2/y
range: y≠0  (-∞,0) U (0,∞)