WeBWorK Standalone Renderer

Let $\Phi(u,v)=(2u+6v,2u+8v)$ . Use the Jacobian to determine the area of $\Phi(\mathcal{R})$ for:

$\mathbf{(a)}\mathcal{R}=[0,9]\times [0,6]$

$\mathbf{(b)}\mathcal{R}=[2,17]\times [4,16]$

$\mathbf{(a)}\mathrm{Area} \left(\Phi (\mathcal{R})\right)=$

$\mathbf{(b)}\mathrm{Area} \left(\Phi (\mathcal{R})\right)=$

You can earn partial credit on this problem.