QuestionIs the mapping $f=\{(\mathrm{a}, 2),(\mathrm{b}, 5),(\mathrm{c}, 7),(\mathrm{d}, 5)\}$ a function from $A=\{\mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{d}\}$?

Studdy Solution
From steps4-7, we can see that every element in $A$ is paired with exactly one element in $B$. Therefore, $f$ is a function from $A$ to $B$.
The correct answer is Yes, because each element in the domain is paired with a unique element in the range.