(a) Use L'Hopital's rule to evaluate the limiting expression x² – 2Ax + A² lim eА-х — 1 (b) This question concerns the function y = f(x) = Bxª – Cx². (i) Show that the curve y = f(x) has three stationary points and determine the (x, y) coordinates of these points. (ii) Use differentiation to determine the nature of each of the three stationary points (maximum, minimum, inflection).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.5: Rational Functions
Problem 54E
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A=10 B=11 C=7 D=8

(a) Use L'Hopital's rule to evaluate the limiting expression
x² – 2Ax + A?
lim
eA-x – 1
(b) This question concerns the function y = f(x) = Bxª – Cx².
(i)
Show that the curve y = f(x) has three stationary points and
determine the (x, y) coordinates of these points.
(ii)
stationary points (maximum, minimum, inflection).
Use differentiation to determine the nature of each of the three
Transcribed Image Text:(a) Use L'Hopital's rule to evaluate the limiting expression x² – 2Ax + A? lim eA-x – 1 (b) This question concerns the function y = f(x) = Bxª – Cx². (i) Show that the curve y = f(x) has three stationary points and determine the (x, y) coordinates of these points. (ii) stationary points (maximum, minimum, inflection). Use differentiation to determine the nature of each of the three
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