Let a, b, c, d be real numbers where c and d are not both zero. Let X = {x E R | cx + d + 0}. The function f :X → R ax + b is defined by f(x) cx + d 1. Under what condition/s on a, b, c, d will ƒ be one-to-one? 2. In addition to the condition/s above, justify that f is a bijection iff c = 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.4: Definition Of Function
Problem 54E
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Let a, b, c, d be real numbers where c and d are not both zero. Let X = {x is a real number | cx + d =/= 0}. The function f : X -> R is defined by

f(x) = (ac + b)/(cx + d)

a. Under what condition/s on a, b, c, d will f be one-to-one?

b. In addition to the condition/s above, justify that f is a bijection iff c = 0.

Let a, b, c, d be real numbers where c and d are not both zero. Let X = {x E R | cx + d + 0}. The function f :X → R
ax + b
is defined by f(x)
cx + d
1. Under what condition/s on a, b, c, d will ƒ be one-to-one?
2. In addition to the condition/s above, justify that f is a bijection iff c = 0.
Transcribed Image Text:Let a, b, c, d be real numbers where c and d are not both zero. Let X = {x E R | cx + d + 0}. The function f :X → R ax + b is defined by f(x) cx + d 1. Under what condition/s on a, b, c, d will ƒ be one-to-one? 2. In addition to the condition/s above, justify that f is a bijection iff c = 0.
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