Browse Questions

# Fill in the blank: A function $f: A \rightarrow B$ where for every $x1, x2 \in X, f (x1) = f (x2) \Rightarrow x1 = x2$, is called a ______ function?

Answer: One-One or Injective Function.  A function $f: A \rightarrow B$ where for every $x1, x2 \in X, f(x1) = f(x2) \Rightarrow x1 = x2$ is called a one-one function.