What are the domain and range of f? What is the inverse of f? Corppute fof fof. 1.4. REFERENCES AND SUGGESTED READINGS 24. Let f: X→Y be a map with A₁, A2 C X and B₁, B₂CY. (a) Prove f(A₁ U A₂) = f(A1) Uf(A₂). (b) Prove f(A₁A₂) c f(A1) nf(A₂). Give an example in which equality fails. (c) Prove f-¹(B₁ U B₂) = f(B₁) Uf-(B₂), where f¹(B) = (x EX: f(x) = B). (d) Prove f-¹(B₁ B₂) = f'(B₁) nf-¹(B₂). (e) Prove f-¹(Y\B₁)=X\f-¹(B₁). 25. Determine whether or not the following relations are equivalence relations on set. If the relation is an equivalence relation describe the partition given by
What are the domain and range of f? What is the inverse of f? Corppute fof fof. 1.4. REFERENCES AND SUGGESTED READINGS 24. Let f: X→Y be a map with A₁, A2 C X and B₁, B₂CY. (a) Prove f(A₁ U A₂) = f(A1) Uf(A₂). (b) Prove f(A₁A₂) c f(A1) nf(A₂). Give an example in which equality fails. (c) Prove f-¹(B₁ U B₂) = f(B₁) Uf-(B₂), where f¹(B) = (x EX: f(x) = B). (d) Prove f-¹(B₁ B₂) = f'(B₁) nf-¹(B₂). (e) Prove f-¹(Y\B₁)=X\f-¹(B₁). 25. Determine whether or not the following relations are equivalence relations on set. If the relation is an equivalence relation describe the partition given by
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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