Part A Consider the function f defined over J0;+[ as f(x)=1+X) and denote by (C) its representative curve in an orthonormal system (0,1,j). 1) Determine lim f(x). Deduce an equation of an asymptote to the curve (C).

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Part A
Consider the function f defined over J0;+o[ as f(x) =1+
(In x)2
and denote by (C) its representative
curve in an orthonormal system (0,i,j).
1) Determine lim f(x). Deduce an equation of an asymptote to the curve (C).
X-0*
2) Prove that lim f(x) = 1. Deduce an equation of another asymptote to the curve (C).
(In x)(2 - Inx)
x?
-, then set up the table of variations of f.
3) Show that f'(x) =-
4) Draw (C).
Page 2 of 6
Part B
An enterprise produces a certain type of articles. The total cost function, expressed in millions LL, is modeled
as C(x) =1+
(In x)?
for all xe[l;e*), where x is the number, in thousands LL, of articles produced.
1) Calculate, in LL, the total cost of 2000 articles.
2) Suppose that the whole production is sold.
The profit function, expressed in millions LL, is modeled as P(x) = 2x -1-
(In x)
and its table of
variations is shown below:
P'(x)
+
P(x)
a- Complete the given table.
b- Study if this enterprise can achieve a profit equal to 2 500 000 LL.
C-
Prove that the selling price of one article is 2 000 LL.
Transcribed Image Text:Part A Consider the function f defined over J0;+o[ as f(x) =1+ (In x)2 and denote by (C) its representative curve in an orthonormal system (0,i,j). 1) Determine lim f(x). Deduce an equation of an asymptote to the curve (C). X-0* 2) Prove that lim f(x) = 1. Deduce an equation of another asymptote to the curve (C). (In x)(2 - Inx) x? -, then set up the table of variations of f. 3) Show that f'(x) =- 4) Draw (C). Page 2 of 6 Part B An enterprise produces a certain type of articles. The total cost function, expressed in millions LL, is modeled as C(x) =1+ (In x)? for all xe[l;e*), where x is the number, in thousands LL, of articles produced. 1) Calculate, in LL, the total cost of 2000 articles. 2) Suppose that the whole production is sold. The profit function, expressed in millions LL, is modeled as P(x) = 2x -1- (In x) and its table of variations is shown below: P'(x) + P(x) a- Complete the given table. b- Study if this enterprise can achieve a profit equal to 2 500 000 LL. C- Prove that the selling price of one article is 2 000 LL.
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