11. The set {f, f2, . .., fn} where each fk is a real-valued function defined on R, is said to be linearly independent if c1, C2, . .. , Cn E R and E C fk (x) = 0 for every r ER implies C1 = c2 = ·..= Cn = 0 Suppose fr(x) = x* for all x ER and k = 1, ..., n. Then, A. the set {f1,..., fn} is linearly independent. B. each pair of these functions is linearly independent, but larger n-tuples are not. C. only the subset of odd-numbered functions and the subset of even-numbered functions are linearly independent. D. every "proper subset of this set of functions is linearly independent, but the whol

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter5: Rings, Integral Domains, And Fields
Section5.4: Ordered Integral Domains
Problem 7E: For an element x of an ordered integral domain D, the absolute value | x | is defined by | x |={...
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The question is attached in the image. How can a function defined in the following manner be 'linearly' independent? The function is given by "fk (x) = x^k". For any x value we can define a transformation in this manner but why will the set be 'linearly' independent?

Please provide a solution for the question given in the image. Thank you. 

11. The set {f1, f2, ..., fn} where each fr is a real-valued function defined on R, is said to
be linearly independent if c1, C2, . .. , Cn E R and EC fr (x) = 0 for every r ER implies
C1 = C2 = ·….= Cn = 0
Suppose fr(x) = x* for all r E R and k = 1,..., n. Then,
A. the set {f1, ..., fn} is linearly independent.
B. each pair of these functions is linearly independent, but larger n-tuples are not.
C. only the subset of odd-numbered functions and the subset of even-numbered
functions are linearly independent.
D. every "proper subset of this set of functions is linearly independent, but the
whole set is not.
Transcribed Image Text:11. The set {f1, f2, ..., fn} where each fr is a real-valued function defined on R, is said to be linearly independent if c1, C2, . .. , Cn E R and EC fr (x) = 0 for every r ER implies C1 = C2 = ·….= Cn = 0 Suppose fr(x) = x* for all r E R and k = 1,..., n. Then, A. the set {f1, ..., fn} is linearly independent. B. each pair of these functions is linearly independent, but larger n-tuples are not. C. only the subset of odd-numbered functions and the subset of even-numbered functions are linearly independent. D. every "proper subset of this set of functions is linearly independent, but the whole set is not.
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