Determine which of the following pairs of functions are linearly independent. dependent 1. f(x) = x³ g(x) = |x|³ independent 2. f(0) = cos(30) dependent ♦ 3. f(t) = 3t² + 21t independent 4. f(x) = ³x " " 9 g(0) = 12 cos³ (0) — 9 cos(0) g(t) = 31²-21t g(x) = e³(x-3)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Determine which of the following pairs of functions are linearly independent.
1. f(x) = x³ g(x) = |x|³
Linearly dependent
Linearly independent
Linearly dependent
Linearly independent
2
2. f(0) = cos(30)
3. f(t) = 3t² + 21t
4. f(x) = e³x
9
g(0) = 12 cos³ (0) — 9 cos(0)
g(t) = 3t² — 21t
-
g(x) = e³(x-3)
Transcribed Image Text:Determine which of the following pairs of functions are linearly independent. 1. f(x) = x³ g(x) = |x|³ Linearly dependent Linearly independent Linearly dependent Linearly independent 2 2. f(0) = cos(30) 3. f(t) = 3t² + 21t 4. f(x) = e³x 9 g(0) = 12 cos³ (0) — 9 cos(0) g(t) = 3t² — 21t - g(x) = e³(x-3)
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