1. Let A = {r E R : e # 2} and define f : A R by f(x) = . 5r+1 I-2 (a) Show thatf is one-to-one. (b) Show that if y + 5, then y E rng f. (c) Show that 5 ¢ rng f.

Advanced Engineering Mathematics
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ISBN:9780470458365
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1. Let A = {r € R : e # 2} and define f : A →R by f(x) = .
5x+1
%3D
r-2
(a) Show that f is one-to-one.
(b) Show that if y # 5, then y E rng f.
(c) Show that 5 ¢ rng f.
Transcribed Image Text:1. Let A = {r € R : e # 2} and define f : A →R by f(x) = . 5x+1 %3D r-2 (a) Show that f is one-to-one. (b) Show that if y # 5, then y E rng f. (c) Show that 5 ¢ rng f.
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