In the 3D coordinate system, for the quadric with euqation ax2 + y2 + 4z2+x + 6y − 4z = −a − 10 where a is a parameter. Find all the values of a for which this quadric is (1) an elliptical cone...

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.3: Lines And Planes
Problem 44EQ
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In the 3D coordinate system, for the quadric with euqation ax2 + y2 + 4z2+x + 6y − 4z = −a − 10 where a is a parameter.

Find all the values of a for which this quadric is

(1) an elliptical cone...

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