Vector Space Proof: Is V a Vector Space?

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vector space proof??

Let V = ((a1,a2): a1,a2 \in R).
For (a1,a2), (b1,b2) \in V
and c \in R, define

(a1,a2) + (b1,b2) = (a1 + 2b1, a2 + 3b2) and c(a1,a2) = (ca1, ca2).

Is V a vector space over R with these operations? Justify your answer.

Does this set hold for all the eigth vector space properties?
 
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That's a good question. Let me know when you find out. :smile:

More to the point, which ones have you tried?
 


list the properties of a vector space & test them - easy
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...

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