Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Transcribed Image Text:f: X→ Y and g: Y→V be bijective functions. Show the following:
) gof: X → V is injective.
) gof: X → V is surjective.
) (gof)-¹=f-¹og=¹
Use:
v injective if x1 ‡xn → v(x1) = v(xn)
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