(1.1)It f: R→ R be defined by f(x) = x². Is fone-to-one? Explain. Is fonto? Explain.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.3: Properties Of Functions
Problem 1E
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(1.1)I et f: RR be defined by f(x) = x².
Is fone-to-one? Explain.
Is fonto? Explain.
(1.2) Let f: X→ Ybe a function and let A,BC X. Prove
that
(2) f(AUB) = f(A) U ƒ(B).
Transcribed Image Text:(1.1)I et f: RR be defined by f(x) = x². Is fone-to-one? Explain. Is fonto? Explain. (1.2) Let f: X→ Ybe a function and let A,BC X. Prove that (2) f(AUB) = f(A) U ƒ(B).
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