Question
Let a be a nonzero vector in
. Define
by
- Let a be a nonzero vector of
. Answer the following questions.
(ii) Write
and let
. Show that
is a basis
for
.
(ii) Write
for
Ask by Adkins Hart. in South Korea
Dec 16,2024
Upstudy AI Solution
Tutor-Verified Answer
Answer
벡터
와
가 선형 독립이므로,
는
의 기저입니다.
Solution

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To show that
is a basis for
, we need to demonstrate that the vectors
and
are linearly independent. This means that the only solution to the equation
(where
and
are scalars) must be
and
.
We can express this equation as follows:
This expands to the system of equations:
We will analyze these equations. If we assume
and
are not both zero, we can derive relationships between them. From the first equation, we can solve for
:
Substitute
into the second equation:
Since
is nonzero,
and
cannot both be zero, thus
. Therefore, it must be that
, and from the first equation,
follows. This confirms that
and
are linearly independent.
As a result, since we have two linearly independent vectors in
,
is indeed a basis for
.