var(a+by) = b²o,
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Solve and give the answer as well as explaining that slide better please
![D. Derivations of the Key Concepts
var(a + by)=b²o,
(2.30)
To derive Equation (2.30), use the definition of the variance to write var(a + by) =
El[a+bY-E(a+bY)])=E([b(Y - My)]}=b²E[(Y - My)²] =b²o.
Copyright © 2011 Pearson Addison-Wesley. All rights reserved.
1-6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc9737efd-391f-457a-98f6-aa044a0527f1%2F8f2e4521-0310-4501-851c-2cb325a7d706%2Fw6ax22e_processed.jpeg&w=3840&q=75)
Transcribed Image Text:D. Derivations of the Key Concepts
var(a + by)=b²o,
(2.30)
To derive Equation (2.30), use the definition of the variance to write var(a + by) =
El[a+bY-E(a+bY)])=E([b(Y - My)]}=b²E[(Y - My)²] =b²o.
Copyright © 2011 Pearson Addison-Wesley. All rights reserved.
1-6
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