`f(x) = {{:(kx^(2)"," if x le 2),(3", " if x gt 2):}` at x = 2

Explanation

To determine the value of \( k \) such that the function

\[
f(x) =
\begin{cases}
kx^2 & \text{if } x \leq 2 \\
3 & \text{if } x > 2
\end{cases}
...