Final Examination December 2007 - Mathematics 253 - Multivariable Calculus, Exams of Calculus

A final examination for the university of british columbia's mathematics 253 course in multivariable calculus. The exam is closed-book and lasts for 2.5 hours. It includes instructions for the candidates, rules governing examinations, and mathematical problems. The problems cover topics such as vector angles, directional derivatives, tangent planes, partial derivatives, implicit differentiation, critical points, and integrals.

Typology: Exams

2012/2013

Uploaded on 02/25/2013

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The University of British Columbia
Final Examination - December 2007
Mathematics 253
Multivariable Calculus
Closed book examination Time: 2.5 hours
Name Signature
Student Number
Circle your section no.: 101 Dr. Tsai 102 Dr. Graham 103 Dr. Froese
Special Instructions:
- Be sure that this examination has 10 pages. Write your name on top of each page.
- No calculators or notes are permitted.
- Show all your work. Unsupported solutions deserve no mark.
- In case of an exam disruption such as a fire alarm, leave the exam papers in the room and
exit quickly and quietly to a pre-designated location.
Rules governing examinations
Each candidate should be prepared to produce her/his
library/AMS card upon request.
No candidate shall be permitted to enter the examination
room after the expiration of one half hour, or to leave during
the first half hour of examination.
Candidates are not permitted to ask questions of the in-
vigilators, except in cases of supposed errors or ambiguities
in examination questions.
CAUTION - Candidates guilty of any of the following or
similar practices shall be immediately dismissed from the
examination and shall be liable to disciplinary action.
(a) Making use of any books, papers, or memoranda, other
than those authorized by the examiners.
(b) Speaking or communicating with other candidates.
(c) Purposely exposing written papers to the view of other
candidates.
Smoking is not permitted during examinations.
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Total 100
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The University of British Columbia Final Examination - December 2007 Mathematics 253 Multivariable Calculus

Closed book examination Time: 2.5 hours

Name Signature

Student Number

Circle your section no.: 101 Dr. Tsai 102 Dr. Graham 103 Dr. Froese

Special Instructions:

  • Be sure that this examination has 10 pages. Write your name on top of each page.
  • No calculators or notes are permitted.
  • Show all your work. Unsupported solutions deserve no mark.
  • In case of an exam disruption such as a fire alarm, leave the exam papers in the room and exit quickly and quietly to a pre-designated location.

Rules governing examinations

  • Each candidate should be prepared to produce her/his library/AMS card upon request.
  • No candidate shall be permitted to enter the examination room after the expiration of one half hour, or to leave during the first half hour of examination.
  • Candidates are not permitted to ask questions of the in- vigilators, except in cases of supposed errors or ambiguities in examination questions.
  • CAUTION - Candidates guilty of any of the following or similar practices shall be immediately dismissed from the examination and shall be liable to disciplinary action. (a) Making use of any books, papers, or memoranda, other than those authorized by the examiners. (b) Speaking or communicating with other candidates. (c) Purposely exposing written papers to the view of other candidates.
  • Smoking is not permitted during examinations.

Total 100

Page 1 out of 10

  1. [20pt] For the following questions, fill in the answers in the boxes. No work need to be shown and no partial credit will be given.

(a) Find the angle between the two vectors v 1 = (1, 0 , 1) and v 2 = (0, 1 , 1).

Answer =

(b) Find the directional derivative of the function f (x, y) = ex+y^ along the direction of the vector v = ( √^12 , √^12 ) at x = 0, y = 1.

Answer =

(c) Find the tangent plane to the surface x(cos y)ez^ = 1 at the point (1, 0 , 0).

Answer =

  1. [12pt] Given three points A = (1, 2 , 3), B = (1, 3 , 4), C = (0, 1 , 3). (a) Find the equation of the plane E containing A, B, C. (b) Find the area of the triangle with vertices A, B, C.
  1. [10pt] If z is defined implicitly as a function of x and y by

xy^3 + x^2 z^4 = 2,

what is

∂z ∂x

when x = y = z = 1?

  1. [12pt] Find the closest points to the origin on the ellipse x^2 + 4y^2 + 2x = 3.
  1. [12pt] Consider the tetrahedron bounded by the four planes

x = 0, y = 0, z = 0, x + 2y + 3z = 6.

Find the limits of the integrals for its volume in the three different orders ∫ ∫ ∫ dx dy dz,

dy dx dz,

dz dx dy.

  1. [12pt] Find the mass of the solid in between the two spheres centered at the origin with radii 1 and 2, above the xy-plane, and with density function z. Hint: sin(2t) = 2 sin t cos t.