Question

If a = 3i-j-4k, b= -2i+ 4j – 3k and c = i +2j-k. Find unit vector parallel to 3 a - 2 b +4 c

Answer 1

Answer:

$(17i - 3j - 10k) \div \sqrt{398}$

Step-by-step explanation:

Substitute the values to get a vector in terms of I,j,K.

ai + bj + ck =x

then unit vector = (ai+bj+ck)/(a^2+b^2+c^2)^(1/2)

or

$x \div |x|$