If `veca` and `vecb` are vectors in space given by `veca=(hati-23hatj)/(sqrt(5))`
`vecb=(2hati+hatj+3hatk)/(sqrt(14))` then the value of `(2veca+vecb).[(vecaxxvecb)xx(veca-2vecb)]`, is

If veca and vecb are vectors in space given by veca=(hati-2hatj)/(sqrt(5)) vecb=(2hati+hatj+3hatk)/(sqrt(14)) then the value of (2veca+vecb).[(vecaxxvecb)xx(veca-2vecb)] , is

If veca and vecb are vectors in space given by veca= (hati-2hatj)/sqrt5and vecb= (2hati + hatj + 3hatk)/sqrt14 then find the value of (2veca + vecb) . [(vecaxxvecb) xx (veca- 2vecb)]

If veca=(3hati-hatj)/(sqrt(10)) and vecb=(hati+3hatj+hatk)/(sqrt(11)), then the value of (2veca+vecb)".[(veca xx vecb)xx(veca-3vecb)]

If veca=1/(sqrt(10))(3hati+hatk),vecb=1/7(2hati+3hatj-6hatk) , then the value of (2veca-vecb).{(vecaxxvecb)xx(veca+2vecb)} is

A class XII student appearing for a competitive examination was asked to attempt the following questions Let veca,vecb and vecc be three non zero vectors. If veca=hati-2hatj,vecb=2hati+hatj+3hatk then evaluate (2veca+vecb).[(veca+vecb)xx(veca-2vecb)]

If veca=hati+hatj+hatk , vecb=2hati+hatj-hatk and vecc=4hati+3hatj+hatk then value of ((veca+vecb)xx(veca -(veca-vecb)xxvecb)))xxvecc is

If vecA=9hati-7hatj+5hatk and vecB=3hati-2hatj-6hatk then the value of (vecA+vecB).(vecA-vecB) is

If veca = hati+hatj-2hatk, vecb=2hati-3hatj+hatk the value of (2veca+3vecb) . (2vecbxx3veca) is :

Let veca=hati-hatj+hatk, vecb=2hati+hatj+hatk and vecc=hati+hatj-2hatk , then the value of [(veca, vecb, vecc)] is equal to

If veca = (hati - 2hatj -3hatk) and vecb = (2hati + 4hatj +9 hatk) then find a unit vector parallel to (veca + vecb) .