[reham.F]

f(x) = x2 - 5
g(x) = 3x - 1
(a) f g = 1

2
x > 3 (-, ) x 5 (-, 1]


(b) g f = 3

4
x 5 x > 3 (-, 1] (-, )


(c) f f = 5

6
x 5 (-, 1] (-, ) x > 3


(d) g g = 7


و سؤال 14
a) If g(x) = 3x + 1 and h(x) = 9x2 + 6x + 8

شكرن :)