\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
$\left\|(1,2,-2)\right\|=\sol$