Mathematics Exam: Limits, Gradients, and Integrals, Exams of Calculus

A mathematics exam focusing on limits, gradients, and integrals. The exam consists of 7 problems, including finding limits, computing gradients, and evaluating integrals. Students are required to write their names and ids, and are given 150 minutes to complete the exam.

Typology: Exams

2012/2013

Uploaded on 02/25/2013

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Final 253
You have 150 min to solve 7 problems. Please note
Write your name/student id clearly
Write only on one side of the paper in the space design for it. Use the last
few pages of the exam for calculations.
Good luck!
Name: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Student ID: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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Good luck!^ •^ • Final 253^ You have 150 min to solve 7 problems. Please note Name: Student ID:^ Write your name/student id clearlyWrite only on one side of the paper in the space design for it. Use the lastfew pages of the exam for calculations. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

  1. (a) Compute the gradient of the function (b) Use the gradient to approximate f (x, y f ) =(0, 0 ∫.1). (^) xy cos(t (^2) ) dt
  1. Find the direction in which the directional derivative of the function at point (0, 2) has the value 1. f (x, y) = ye−xy
    1. Find the limit or show that it does not exist (x,y,zlim)→(0, 0 ,0) xy x 2 + + yz y 22 ++ zxz
    1. If(a)(b) z = f (x, y) where x = s + t and4(( zyzx x=) 2 )( s−z y− ) = ((z ty )show that 2 z= (s) 2 z−s) ( (zztt))
    1. a Find the critical points of the function b Explore the points and check if they are minima/maxima or saddle pointsc In 3 lines or less, explain why the result you obtain does not have an equivalentwhen considering a function of a single variable. f (x, y) = −(x 2 − 1) 2 − (x 2 y − x − 1)
    1. Evaluate the integral where D is the domain enclosed by the lines x − 2 y = 0, x − 2 Iy == 4 ∫ ∫, D 3 x 3 x x− −− 2 yyy = 1dA and 3 x − y =

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