Answer
$⟨-6,7,-2⟩$
Work Step by Step
We calculate the cross-product as follows:
$\textbf{v}\times\textbf{w}=\begin{vmatrix}\textbf{i}&\textbf{j}&\textbf{k}\\1&2&4\\1&0&-3\end{vmatrix}$
$=\textbf{i}(2\times-3-4\times0)-\textbf{j}(1\times-3-4\times1)+\textbf{k}(1\times0-2\times1)$
$=-6\textbf{i}+7\textbf{j}-2\textbf{k}$
That is, $\textbf{v}\times\textbf{w}= ⟨-6,7,-2⟩$
