1) S = {a + bx + cx²: a + 2b – 3c = 1; a, b, cE R} 2) S = {a + bx + cx²: a + 2b – 3c = 0; a, b, c E R} 3)

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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................................................./...............................................,,......../..............................................

please show work as neat and complete as possible.

thanks in advance.

................................................./...............................................,,......../..............................................

Include every possible detail in the solutions of all problems.
Be sure to check your notation.
Either prove that the given set S is a subspace of the vector space V or demonstrate that S
is not a subspace of V.
In your proofs, do not combine steps.
Any time you rely on a property of real numbers, indicate which property of real numbers
I.
you are using to go from one step to the next.
Do not use linear combinations when proving S is a subspace.
Instead, treat vector addition and scalar multiplication separately, the way we did it in class.
To demonstrate that S is not subspace, show that one of the ten criteria for being a
subspace fails to hold true.
1)
S = {a + bx + cx²: a + 2b – 3c = 1; a, b, c € R}
2)
S %3D {a + bx + сx?: а + 2b — Зс %3D 0%; а, b, с E R}
3)
= {[: "]:« € (-», 0]}
I.
Find a set of vectors S that spans the vector space V.
Begin by parameterizing V; show your work.
r
2r – s
1)
V =
3r + t
: r, s,t E Z
with the usual operations from R°
4r + 6s – t
2)
V =
: 2a – d = 0, -2a + c – 2b + d = 0; a, b, c, d e Z }
with the usual operations from M22
Transcribed Image Text:Include every possible detail in the solutions of all problems. Be sure to check your notation. Either prove that the given set S is a subspace of the vector space V or demonstrate that S is not a subspace of V. In your proofs, do not combine steps. Any time you rely on a property of real numbers, indicate which property of real numbers I. you are using to go from one step to the next. Do not use linear combinations when proving S is a subspace. Instead, treat vector addition and scalar multiplication separately, the way we did it in class. To demonstrate that S is not subspace, show that one of the ten criteria for being a subspace fails to hold true. 1) S = {a + bx + cx²: a + 2b – 3c = 1; a, b, c € R} 2) S %3D {a + bx + сx?: а + 2b — Зс %3D 0%; а, b, с E R} 3) = {[: "]:« € (-», 0]} I. Find a set of vectors S that spans the vector space V. Begin by parameterizing V; show your work. r 2r – s 1) V = 3r + t : r, s,t E Z with the usual operations from R° 4r + 6s – t 2) V = : 2a – d = 0, -2a + c – 2b + d = 0; a, b, c, d e Z } with the usual operations from M22
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