Question
Can a constant function, such as $f(x)=3,$ defined over the set of real numbers, be one-to-one?
Step 1
A function is said to be one-to-one (or injective) if it assigns a unique output to each unique input. In other words, if $f(x_1) = f(x_2)$, then $x_1$ must be equal to $x_2$. Show more…
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