Final answer:
To prove the equation (α+β)(u+ v )=αx+αy +βx +βy, expand and rearrange using the distributive property of scalar multiplication over vector addition.
Step-by-step explanation:
To prove that in any vector space V, (α+β)(u+ v )=αx+αy +βx +βy, for any α,β∈R and any u, v∈V, we can use the distributive property of scalar multiplication over vector addition. Let's start by expanding the left side of the equation:
(α+β)(u+ v) = α(u + v) + β(u + v)
Next, we can use the distributive property to expand each term:
α(u + v) + β(u + v) = αu + αv + βu + βv
We can now rearrange the terms on the right side of the equation:
αu + αv + βu + βv = αx + αy + βx + βy
Since the left side and right side of the equation are equal, we have proven that (α+β)(u+ v )=αx+αy +βx +βy for any α,β∈R and any u, v∈V.