Determining subspaces of C ( - ∞ , ∞ ) In Exercises 2 1 - 2 8 , determine whether the subset of C ( - ∞ , ∞ ) is a subspace of C ( - ∞ , ∞ ) with the standard operations. Justify your answer. The set of all positive functions: f ( x ) > 0
Determining subspaces of C ( - ∞ , ∞ ) In Exercises 2 1 - 2 8 , determine whether the subset of C ( - ∞ , ∞ ) is a subspace of C ( - ∞ , ∞ ) with the standard operations. Justify your answer. The set of all positive functions: f ( x ) > 0
Solution Summary: The author explains that the set of all positive functions f(x)>0 is not a subspace of
Determining subspaces of
C
(
-
∞
,
∞
)
In Exercises
2
1
-
2
8
, determine whether the subset of
C
(
-
∞
,
∞
)
is a subspace of
C
(
-
∞
,
∞
)
with the standard operations. Justify your answer.
Question : The set H =
x2 + y2 <
is a subset of R². Show
that H is not a subspace of R2.
Determine W whether is a subspace of the R3 or not? W={(x1,x2,x3): x1=a, x2=2a, x3=3a, where a is a real number}(2) Determine W whether is a subspace of the R3 or not? W={(x1,x2,x3): x1+ x2+ x3=0}
Show that P2 is a subspace of P3 (See
polynomial vector spaces.)
the definition of the
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