Provide an appropriate response.Prove that the function f is one-to-one.f(x) =
+ 5
What will be an ideal response?
Assume that f(a) = f(b) for any numbers a and b in the domain of f.
Since f(a) = + 5 and f(b) =
+ 5, we have
+ 5 =
+ 5
=
a = b
Thus if f(a) = f(b) then a = b and f is one-to-one.
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