P5 Evaluate the following 1 2 3 4 5 6 Solution1 f og2

P5

Evaluate the following:

1.		=
2.		=
3.		=
4.		=
5.		=
6.		=

Solution

1. (f og)(2)

find g(2) ; g(2) = 0

(f og)(2) = f(0) = 2

2. (g o f)(2)

find f(2) : f(2) = 4

(g o f)(2) = g(4) = 4

3 . (f o f) (2)

find f(2) : f(2) =4

(f o f) (2) = f(4) = 6

4. (g o g) (2)

g(2) =0

(g o g) (2) = g(0) = 4

5. (f +g)(4) = f(4) +g(4) = 6 +4 = 10

6.(f/g)(2) = f(2)/g(2) = undefined