Assertion : For `a= -1/sqrt(3)` the volume of the parallelopiped formed by vectors `hat(i) + a hat(j) , a hat(i) + hat(j) + hat(k)` and `hat(j) + hat(a) hat(k)` is maximum.

Reason : The volume of the parallelopiped having three coterminous edges `vec(a) , vec(b)` and `vec(c) = | [ vec(a)vec(b)vec(c)] |`