For the following fuctions I'd like your help with finding Wronskian determinant: $y_2(t)=\begin{pmatrix} e^t\\ e^t \end{pmatrix}, y_1(t)=\begin{pmatrix} t^2\\ 2t \end{pmatrix}$.
Wornskian determinant defined by $\mathbb{W}(y_1,y_2)=\begin{vmatrix} y_1 & y_2 \\ y_1' & y_2' \end{vmatrix}$.
How should I solve find it with the given $y_1$ and $y_2$? What should I use?
Thanks a lot.