\SCALARPRODUCT(1,-1)(3,5){\sol} $(1,-1)\cdot(3,5)=\sol$ \DOTPRODUCT(1,-1,2)(3,5,-1){\sol} $(1,-1,2)\cdot(3,5,-1)=\sol$ \VECTORNORM(3,4)\sol $\left\|(3,4)\right\|=\sol$ \VECTORNORM(1,2,-2)\sol $\left\|(1,2,-2)\right\|=\sol$