10 Find f x for the function given in question 7 SolutionTo

10 Find f (x) for the function given in question #7

Solution

To prove given function is injective, we have to prove that g(a) = g(b) then a = b.
So f(x) = x^2 + 4x - 32, we need to show that if f(x) = f(x\') then x = x\'.
So our assumption f(x) = f(x\') holds true and deduce (x) = (x\')
this equality shows that given function is injective.