Let G = D8 = (r, s | r8 = id = s², sr=r7s). Let N = (4). Prove that G/N ≈ D₁.

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Chapter2: Second-order Linear Odes
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Let G = D8 = (r, s | r8 = id = s², sr = r7s).
Let N = (rª).
Prove that G/N ≈ D4.
Transcribed Image Text:: Let G = D8 = (r, s | r8 = id = s², sr = r7s). Let N = (rª). Prove that G/N ≈ D4.
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