Question

Let u = 2 −3 0 , v = −4 1 8 , and w = 3 −5 −1 . a. Compute 3u − 2v + 5w. Incorrect: Your answer is incorrect. b. Compute −4u + 3v − 2w. Incorrect: Your answer is incorrect.

Answer 1

Answer:

Step-by-step explanation:

u = < 2, -3, 0 >

v = < - 4, 1, 8 >

w = < 3, -5, -1 >

(a) 3 u - 2 v + 5 w

= 3 < 2, -3, 0 > - 2 < -4, 1, 8 > + 5 < 3, -5, -1 >

= < 6 + 8 + 15, - 9 - 2 - 25, 0 - 16 - 5 >

= < 29, - 36, - 21 >

(b) - 4 u + 3v - 2 w

= - 4 < 2, -3, 0 > + 3 < - 4, 1, 8 > - 2 < 3, -5, - 1 >

= < - 8 - 12 - 6, 12 + 3 + 10, 0 + 24 + 2 >

= < - 26, 25, 26 >