Consider the following quadratic form f : R³ → R, f(x1,x2, X3) = xỉ + x² + xỷ – ax1X2 – X1X3+ aX2X3 Find the values a ER for which this quadratic form is: 1. positive definite 2. positive semidefinite 3. negative definite

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Consider the following quadratic form f : R3 → R,

function is in the image


Find the values a ∈ R for which this quadratic form is:
1. positive definite
2. positive semidefinite
3. negative definite
4. negative semidefinite
5. indefinite

Consider the following quadratic form f : R³ → R,
f(x1, x2, x3) = xỉ + x + x3 – ax1x2 – X1X3+ AX2X3
Find the values a E R for which this quadratic form is:
1. positive definite
2. positive semidefinite
3. negative definite
4. negative semidefinite
5. indefinite
Transcribed Image Text:Consider the following quadratic form f : R³ → R, f(x1, x2, x3) = xỉ + x + x3 – ax1x2 – X1X3+ AX2X3 Find the values a E R for which this quadratic form is: 1. positive definite 2. positive semidefinite 3. negative definite 4. negative semidefinite 5. indefinite
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