If `vec(a) = hat(i) + hat(j) + 2 hat(k)` and `vec(b) = 3 hat(i) + 2 hat(j) - hat(k)`, find the valu
Channel: Doubtnut
Date: 16/08/2020

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