1. If (G,*) a group such that a² = e for all a € G. Prove that G is abelian. 2. Define an operation on G=R x R\{0} as follows: (a, b) (c,d) = (a + bc, bd) for all (a, b), (c,d) € G. Show that (G, *) is a group. Is G abelian?
1. If (G,*) a group such that a² = e for all a € G. Prove that G is abelian. 2. Define an operation on G=R x R\{0} as follows: (a, b) (c,d) = (a + bc, bd) for all (a, b), (c,d) € G. Show that (G, *) is a group. Is G abelian?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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