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Unformatted text preview: HW7 Tian Gu Code: 815 10/17/2010 Problem 1 This is a complex number problem A=3+2j B= 5e jp/3 C= 3 with and angle of 30 a) Find A*B in rectangular and exponential forms b) Find A/C in rectangular and exponential forms c) Find (A*C)/B in rectangular and exponential forms Problem 2 Introduction: Vector is a tool in mathematics and physics. And it is also a class template in programming like C++. cross product : In physics, sometimes the notation a ∧ b is used. The definition of the cross product can also be represented by the determinant of a formal matrix: We can use Sarrus' rule and Cofactor expansion. Sarrus' Rule Cofactor expansion Problem 3 Write the following exponentials in real and imaginary formsj5e2j , j2e j p /4 , Aej p , j6ej p /2 Problem 4 Read the following article about lasers and answer the following questions a) What is a size of semiconductor lasers The kinds of lasers used in optical networks are tiny devices — usually about the size of a grain of salt. The kinds of lasers used in optical networks are tiny devices — usually about the size of a grain of salt....
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This document was uploaded on 11/17/2011.
 Fall '09

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