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# 1. Vectors and Matrices

Course: MATH 18.02, Spring 2008

School: MIT

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1. Vectors and Matrices 1A. Vectors Definition. A direction is just a unit vector. The direction of A is defined by A dir A = - , (A # 0); IAI it is the unit vector lying along A and pointed like A (not like -A). 1A-1 Find the magnitude and direction (see the definition above) of the vectors a) i + j + k b) 2 i - j + 2 k c) 3 i - 6 j - 2 k j 1A-2 For what value(s) of c will \$i - + c k be a unit vector? +2j -...

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