Represent Derivatives - Calculus - Exam, Exams of Calculus

This is the Exam of Calculus which includes Types of Concavity, Points of Inflection, Maxima and Minima, Possible Features, Asymptotes, Critical Points, Function, Material etc. Key important points are: Represent Derivatives, Limits, Simplify, Integrals, Evaluate, Function, Maxima, Minima, Asymptotes, Function Increasing

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Math 111 Final Exam December 19, 2011
Name: (Print)
Student ID:
Instructor’s Name:
Signature*:
Your signature above affirms that this examination is completed in accordance with the
NJIT Academic Integrity Code.
Problem
Score
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Math 111 Final Exam December 19, 2011

Name: (Print)

Student ID:

Instructor’s Name:

Signature*:

Your signature above affirms that this examination is completed in accordance with the NJIT Academic Integrity Code.

Problem Score

Total

Read each problem carefully. Show your work clearly. No calculators. (If you need more space, please use the back of the previous page and label clearly).

  1. (8 points) Evaluate the following limits. Hint: they represent derivatives.

a)

3 3 0

lim h hh

b) 6

sin( ) 1 lim^2

6

x

x

x

^ ^ 

d) tan( xy )  y^2  2 x

e) y  2 x tan ^1 ( ) x  ln 1  x^2 (Please Simplify)

f)

3

0

x y   e dtt

  1. Evaluate these integrals (6 points each):

a) cos (^4 ) x x x dx x

 ^  

b)

1/

1/2 1 2

dx   x

c)  

(^3 )

2 ^2 x^ ^5 dx

d)

2 4/

sec 3 tan

x dx x

 (^)  

  1. (25 points) Sketch yx^3^  3 x  2 labeling all maxima, minima, points of inflection and

asymptotes.

Maxima: _____________________________

Minima:______________________________

Horizontal Asymptote(s): ________________

Vertical Asymptote(s): __________________

Slant Asymptote(s):_____________________

Points of inflection _____________________

  1. (16 points for part a; 10 for part b) a) An structure in a playground is set up with height, y , given by y  12 xx^2 , where x represents position along the horizontal direction. A ladder leans against the structure, just touching the structure at the point (8, 32). Find the value of x where the ladder hits the ground by finding the equation of the tangent line to the structure through (8, 32) and finding where this line crosses the (^) x axis.

b) Use one step of Newton’s Method with initial guess x 0 (^)  8 to approximate a root of y  12 xx^2.

7. (10 points) A particle moving along a straight line has position s t ( )  t^4  18 t^2 at time t

seconds (where t  0 ). At what time(s) does the particle stop moving for an instant?

  1. Area problems: (6 points each)

a. Approximate the area under the curve

y x

 on the interval [2, 8] by using three

rectangles of equal width and the value of the function at the left-hand endpoint of each interval. Is your result an underestimate or overestimate of the true area under the curve? Justify.

b. Use an integral to evaluate the area under the curve y^4 x

 on the interval [2, 8].

c. Set up an integral in dx for the area enclosed by the curves yx^2^ and y  3 x. DO NOT EVALUATE.

d. Set up an integral in dy for the same area as in part c. DO NOT EVALUATE.