Question

compute the given functions.
a. f+g b. f-g c. fog d. f/g
1. f(x) -x2/x-2; g(x)=2x
2. f(x)=3x/2x-1; g(x)=x+3/2x-1
3. f(x)=sqrt(x); g(x)=x-4

Answer 1

fog = f(g(x))
f(x)=sqrt(x); g(x)=x-4
f(g(x)) = sqrt g(x)
f(g(x)) = sqrt (x-4)

Answer 2

f+g = sqrt(x)+x-4
f-g=sqrt(x)-x+4

Answer 3

f/g = sqrtx/(x-4)