✓1.20 Show that these are homomorphisms. Are they inverse to each other? (a) d/dx: P3 → P₂ given by ao + a₁x + a₂x² + a3x³ maps to a₁ + 2a₂x + 3a3x² (b) : P₂ → P3 given by bo + b₁x + b₂x² maps to box + (b₁/2)x² + (b₂/3)x³

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