4. Let a be a real number such that 0 < a < 1, and let f(t) = eat – t where t e R. a) Find the equation of the line which is tangent to the graph of f at the point (0, f(0) b) Does f have an inverse function? Explain your answer with some supporting evidence.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 51E
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4. Let a be a real number such that 0 < a < 1, and let f(t) = eat – t where t e R.
a) Find the equation of the line which is tangent to the graph of f at the point (0, f(0)
b) Does f have an inverse function? Explain your answer with some supporting evidence.
c) Prove that for all a, y E (-0, 0), the following inequality is true:
IS(w) – f(x)| < |a- yl-
Transcribed Image Text:4. Let a be a real number such that 0 < a < 1, and let f(t) = eat – t where t e R. a) Find the equation of the line which is tangent to the graph of f at the point (0, f(0) b) Does f have an inverse function? Explain your answer with some supporting evidence. c) Prove that for all a, y E (-0, 0), the following inequality is true: IS(w) – f(x)| < |a- yl-
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