Question

Pls really need help.Find the following quantity if v=3i – 2j + 5k and w= - 4i + 2j – 3k

4v + 3w​

Answer 1

-2j + 11k

Explanation:

4v + 3w

4[3i – 2j + 5k] + 3[- 4i + 2j – 3k]

= 12i - 12i - 8j + 6j + 20k - 9k

= 0i - 2j + 11k

Answer 2

answer will be -2j+11k

expln: 4v+3w

=4(3i-2j+5k)+3(-4i+2j-3k)

=12i-8j+20k-12i+6j-9k

=(12-12)i+(-8+6)j+(20-9)k

= -2j+11k :)