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12 ) Find the domain of fg and f / g for the following
f (x) = x2 -1; 8(x) =72_1
14) Find fog, go f and their domains f(x) =
1
2x +1
8(x) = x2 -1.
15) Graph the following parabolas: a) y = x2 -4x +3
b ) y = - x2 + 2
-2x+4 if x<-3
16) Given y = f(x) = -13 if -15x<4
x2 + 12 if 45x<0
Find the following: a) f(-2)
b ) f ( - 1 ) ,
c) f(2), d) f(0),
e ) f ( 6 )
17) Find a linear equation y = f(x) that satisfies the following conditions
a) f(1) =-3 and f(0) =5
b) f(3) =2 and f(-1) = 4
18) Find the inverse for the following
a ) f ( x ) - 15- x+ 1 of yl no union in;telui at b) f (x) = (x3 +1
(SM-)8 (d

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