Mathematics for Engineers 2, Continuous Assessment

May 4, 2015, 2014/2015 Academic Year, COLTECH

Answer all questions

Problem l(5pomts)

A warehouse floor has a plastic carpet of 80 square meters on it surrounded by an uncarpeted strip of uniform width.

If the warehouse floor is 14 meters long by 12 meters wide, how wide is the uncarpeted strip? (Note: Transform the

problem into an algebraic relationship before solving).

Problem 2 (6points)

4+8++5−=3

Problem 4 (3points)

Given the matrix A =



0 2 1

−2 0 3

−1 −3 0



Prove that it is skewed symmetric.