Exercise 9.1.1 Consider the set R² with the following non-standard addition operation : (a,b) (c,d) = (a +d,b+c). Scalar multiplication is defined in the usual way. Is this a vector space? Explain why or why not.

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Chapter2: Second-order Linear Odes
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**Exercise 9.1.1**

Consider the set \(\mathbb{R}^2\) with the following non-standard addition operation \(\oplus\):

\[
(a, b) \oplus (c, d) = (a + d, b + c).
\]

Scalar multiplication is defined in the usual way. Is this a vector space? Explain why or why not.
Transcribed Image Text:**Exercise 9.1.1** Consider the set \(\mathbb{R}^2\) with the following non-standard addition operation \(\oplus\): \[ (a, b) \oplus (c, d) = (a + d, b + c). \] Scalar multiplication is defined in the usual way. Is this a vector space? Explain why or why not.
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