2. (i) (ii) Prove the following results : cov (x2, x1.23)=cov (x3, x1.23)=0, cov (E 1.23, X1-23) = 0.

Trigonometry (MindTap Course List)
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ISBN:9781337278461
Author:Ron Larson
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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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Prove the following results :
(i) cov (x2, x1.23) = cov (x3, x1.23) = 0,
(ii) cov (E 1.23, X1-23) = 0.
Transcribed Image Text:20 Prove the following results : (i) cov (x2, x1.23) = cov (x3, x1.23) = 0, (ii) cov (E 1.23, X1-23) = 0.
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