" If "vec a=(1)/(sqrt(10))(3hat i+hat k)" and "vec b=(1)/(7)(2hat i+3hat j-6hat k)," then the value of "(2vec a-vec b)*[(vec a timesvec b)times(vec a+2bar(b))]" is: "

(1)/(sqrt(10))(3hat j+hat k) and vec b=(2hat i+3hat j-6hat k) then the value of (2vec a-vec b)*[(vec a xxvec b)xx(vec a+2vec b)] is:

If a and b are vectors in space given by vec a=(hat i-2hat j)/(sqrt(5)) and vec b=(hat 2i+hat j+3hat k)/(sqrt(14)), then find the value of (2vec a+vec b)*[(vec a xxvec b)xx(vec a-2vec b)]

If vec(a)=2hat(i)-5hat(j)+3hat(k) " and " vec(b)=hat(i)-2hat(j)-4hat(k) , find the value of abs(3vec(a)+2vec(b)).

If vec(A)=-hat(i)+3hat(j)+2hat(k) and vec(B)=3hat(i)+2hat(j)+2hat(k) then find the value of vec(A) times vec(B) .

If vec a=2hat i+2hat j-3hat k,vec b=hat i-2hat j+2hat k,vec c=4hat i+3hat j+3hat k then find the value of |vec a+2vec b+2vec c|

If vec a = hat i + 2 hat j - 3 hat k and vec b = 3 hat i - hat j + 2 hat k , then vec a + vec b and vec a - vec b are

If vec a=hat i-2hat j+hat k,vec b=2hat i+hat j-hat k and vec C=3hat i+5hat j+2hat k then find the value of vec a xx(vec b xxvec c)

If vec a=5hat i-hat j-3hat k and vec b=hat i+3hat j-5hat k then show that the vectors vec a+vec b and vec a-vec b are perpendicular.