Is the Set of Functions with a Zero Integral a Subspace of C[a,b]?

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SUMMARY

The set of functions with a zero integral, defined as those functions f such that the integral from a to b of f(x)dx equals 0, is indeed a subspace of the vector space C[a,b]. This conclusion is based on the verification of the subspace axioms: the sum of any two functions in this set also has a zero integral, and any scalar multiple of a function in this set retains the zero integral property. The discussion clarifies that C[a,b] represents the set of all continuous functions defined on the interval [a,b].

PREREQUISITES
  • Understanding of vector spaces and subspaces
  • Knowledge of integral calculus and properties of integrals
  • Familiarity with the notation C[a,b] for continuous functions
  • Basic linear algebra concepts, including scalar multiplication and vector addition
NEXT STEPS
  • Study the properties of vector spaces and subspaces in linear algebra
  • Learn about the properties of integrals, particularly in relation to continuous functions
  • Explore examples of subspaces in functional analysis
  • Investigate the implications of the zero integral condition in various mathematical contexts
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Students studying linear algebra, calculus, and functional analysis, particularly those interested in the properties of vector spaces and integrals.

jaredmt
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Homework Statement


Determine whether or not the given set is a subspace of the indicated vector space:
Functions f such that [integral from a to b]f(x)dx = 0; C[a,b]
(not sure how to do the coding for integrals)

Homework Equations


to be a subspace it must follow these axioms:
(i) if x and y are in W, then x + y is in W.
(ii) if x is in W and k is any scalar, then kx is in W.

The Attempt at a Solution



im having trouble understanding this. what exactly is C[a,b]?
 
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could it be the set of all continuous functions defined on [a,b]?

is there any more to the question?
 
0 + 0 = 0

c0 = 0 where c is an arbitrary constant.

Use properties of the integral.
 

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