e fx x29 f fx x28x 15 3 Find the values of x for which fx

(e) f(x) = x2-9 (f) f(x) = x2-8x + 15 3. Find the values of x for which f(x) = g(x). (a) f(z) = x2 + 2x + 1, g(x)-3x + 3 (b) f(x) = V3x + 1, g(x) = x + 1 4. Find the domain of the function. (a) f(x) = 5x2 + 2x-1 (b) g(x)= 1-2x2 (c) h(t) = (d) s(y) = (e) g(y) =V8-10 (f) f(s)=E (g) f(x)= Assume that the domain of f is A = (-2,-1,0, 1,2). Determine the set of or- dered pairs that represents the function f. (a) f(x)=x2

Solution

3. f(x)=g(x)

a. x²+2x+1=3x+3

x²-x-2=0

(x-2)(x+1)=0

x-2=0, x+1=0

x=2, x=-1

b.sqrt(3x)+1=x+1

sqrt(3x)=x

3x=x²

x²-3x=0

x(x-3)=0

x=0,x=3