sample_exam_questions_2

sample_exam_questions_2 - CE 335 Old exam questions (with...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CE 335 Old exam questions (with solutions following) for Chapters 5-11 1] For the 2-D static truss system above: (a) Assuming that the members are each 3 m long, write a system of linear equations for the unknown reaction forces and forces on the truss members. (b) Is the problem overdetermined, underdetermined, or determinate? 2] Use Gaussian elimination with partial pivoting to solve the system of equations below. Show all steps. 2y + 3z = 4 6x + 2y + 2z = 8 3x + 6y + 7z = 11 3] Suppose that the cost of a production process scales with the fractional process efficiency x as C = x -1 + λ(1 - x) -2 where the first term describes the cost savings from higher efficiency, the second term describes the increase in cost from the more stringent tolerances needed to achieve higher efficiency, and λ is an adjustable positive parameter that sets the relative importance of the two terms. (As λ → 0, the minimum cost is achieved with x → 1; as λ → , the minimum cost is achieved with x → 0.) Write a Matlab function that accepts a value of λ as input, checks to make sure it's positive, and returns the value of x for which C is minimized. Avoid evaluating C where it become infinite (x = 0 and x = 1).
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/30/2011 for the course CGN 3350 taught by Professor Lybas during the Spring '11 term at University of Florida.

Page1 / 5

sample_exam_questions_2 - CE 335 Old exam questions (with...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online