Q10 Ex 1.3 Ch 1 R&F Let f : X →Y be an invertible function. Show that f has unique inverse
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- čas přidán 5. 07. 2019
- Exercise 1.3 Chapter 1 Relations and Functions NCERT XII Mathematics
10. Let f : X →Y be an invertible function. Show that f has unique inverse.
(Hint: suppose g1 and g2 are two inverses of f. Then for all y in Y, fog1(y) = 1Y(y) = fog2(y). Use one-one ness of f).
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