Question 459569: f(x)=(x+3)(x-5)/(x+1)(X-4) find the domain and range
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! f(x)=(x+3)(x-5)/(x+1)(x-4) find the domain and range
..
f(x)=(x+3)(x-5)/(x+1)(x-4)
To find domain, set denominator=0, solve for x
(x+1)(x-4)=0
x+1=0
x≠-1
x-4=0
x≠4
Domain: (-∞,1) U (1,4) U (4,∞)
..
To find range interchange x & y, then solve for y
x=(y+3)(y-5)/(y+1)(y-4)
Range: (-∞,∞)
|
|
|
