Question 3*+Compute \([\mathbf a,\mathbf b,\mathbf c]\) for \(\mathbf a=(1,2,3)\), \(\mathbf b=(0,1,0)\), \(\mathbf c=(2,0,1)\).
Question 9***Find the volume of the tetrahedron with edge vectors \((1,0,0),(0,2,0),(0,0,3)\) from one vertex.
Question 10***Compute the determinant form of the scalar triple product for rows \((1,2,0),(3,1,1),(0,2,4)\).
Question 11***+Show that swapping two vectors changes the sign for \((\mathbf i,\mathbf j,\mathbf k)\).
Question 14****Find the scalar triple product \(\mathbf a\cdot(\mathbf b\times\mathbf c)\) for \(\mathbf a=(0,2,1)\), \(\mathbf b=(1,-1,0)\), \(\mathbf c=(3,0,2)\).
Question 16****+For \(\mathbf a=(1,1,1)\), \(\mathbf b=(1,0,2)\), \(\mathbf c=(0,1,t)\), find \(t\) for volume \(3\).
Question 17****+Find the oriented volume of the parallelepiped with edges \((1,2,3),(4,5,6),(7,8,9)\), and explain what the result says about the three edges.
Question 19*****For \(\mathbf a=(a_1,a_2,a_3)\) and \(\mathbf b=(b_1,b_2,b_3)\), show by component calculation that \(\mathbf a\cdot(\mathbf b\times\mathbf a)=0\).