Using summation notation, prove the Lagrange's identity: (Ã × B) · (Č × D) = (Ā · Ĉ)(B · D) – (Ā · D)(B · Ĉ)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
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Using summation notation, prove the Lagrange's identity:
(Ā × B) · (Č × D) = (Ā · Ĉ)(B · D) – (Ã · D)(B· Č)
Transcribed Image Text:Using summation notation, prove the Lagrange's identity: (Ā × B) · (Č × D) = (Ā · Ĉ)(B · D) – (Ã · D)(B· Č)
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