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Function is one-to-one function
Is a function in which for each value of y in the range of f,
there is just one value x in the domain of f such that y = f(x)
In other words, f is one-to-one if f(x) = f(x2) implies x₁ =
X2.
What does it mean? Consider also our last discussion
Use mapping: (2,5), (3,7),(4,9), (5,11)
What is the formula? Choose your answer
a. f(x)=2x+1
from the given choices then explain why?
b. f(x)=2x+0
c. f(x)=5x+1
d. f(x)=2x+5