$(10$ pts$)$ Task $5$: Consider the following scalar$-$valued function

$f(x)=3x_1^2-2x_2^2$

what is the gradient of this function at the point $(1,2)?$ where $x=\left[\begin{array}{c}{x}_1\\ x_2\end{array}\right]$ is a vector of size $21,$ and the point at $(1,2)$ means that $x=\left[\begin{array}{c}{x}_1\\ x_2\end{array}\right]=\left[\begin{array}{c}1\\ 2\end{array}\right].$ Please provide detailed steps on how to get the answer.