Linear Algebra help

nwicole

New member
Joined
Oct 6, 2014
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18
what is the basis and the span set?

why would the basis can spanning set of the linearly independent vectors?

I m writing a proof : if S is a linearly independent vectors then there will be a span (S) generate the S.
what can i able to write a well set proof?
thank you so much
 
You are asked to do this problem and you do not know the basic definitions? Do you not have a textbook you could look them up in?

A set of vectors is said to be "independent" if no one of them can be written as a linear combination of the others. Another way of putting that is that \(\displaystyle \{v_1, v_2, \cdot\cdot\cdot, v_n\}\) is an independent set of vectors if and only if, whenever \(\displaystyle a_1v_1+ a_2v_2+ \cdot\cdot\cdot+ a_nv_n = 0\) then we must have \(\displaystyle a_1= a_2= \cdot\cdot\cdot= a_n= 0\).

A set of vectors is said to "span" a vector space if and only if every vector in that space can be written as a linear combination of vectors in that set. That is, \(\displaystyle \{v_1, v_2, \cdot\cdot\cdot, v_n\}\) span vector space, V, if and only if whenever v is in V, there exist numbers \(\displaystyle \{a_1, a_2, \cdot\cdot\cdot, a_n\}\) such that \(\displaystyle v= a_1v_1+ a_2v_2+ \cdot\cdot\cdot+ a_nv_n\).

A basis for a vector space is a set of vectors that both span the space and are independent. That means that every vector in the vector space can be written as a linear combination of the vectors in the basis in a unique way.
 
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