1. Suppose that u = (2, 7), v = (0, –1), and w = (-4, 6). (a) Find 2ū. (b) Find ū – w. (c) Find 3w + i. (d) Find -50 + w.
1. Suppose that u = (2, 7), v = (0, –1), and w = (-4, 6). (a) Find 2ū. (b) Find ū – w. (c) Find 3w + i. (d) Find -50 + w.
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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Given: ⃗u = (2,7), ⃗v = (0, -1), and ⃗w = (-4, 6)
⃗u = 2î+7ĵ , ⃗v = 0î-1ĵ , ⃗w = -4î+6ĵ
(a). 2⃗⃗⃗⃗ ⃗u = 2(2î+7ĵ) = (4î+14ĵ)
(b). ⃗u - ⃗w = (2î+7ĵ) - (-4î+6ĵ)
= (6î+ĵ)
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