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Unformatted text preview: huang (jwh2377) Homework 3 Kushner (56640) 1 This printout should have 20 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points Which of the following expressions are well defined for all vectors a , b , and c ? I. ( a b ) c , II. a ( b + c ) , III.  a  ( b c ) . 1. II and III only 2. none of them 3. I only 4. II only 5. I and III only 6. all of them 7. III only 8. I and II only 002 10.0 points Find the angle between the vectors a = ( 3 , 2 ) , b = ( 5 , 3 ) . 1. angle = 5 6 2. angle = 3 3. angle = 4 4. angle = 3 4 5. angle = 6 6. angle = 2 3 003 10.0 points Determine the dot product of vectors a , b when  a  = 1 ,  b  = 4 and the angle between a and b is / 3. 1. a b = 3 2. a b = 3 2 3. a b = 2 4. a b = 5 2 5. a b = 7 2 004 10.0 points Find the scalar projection of b onto a when b = 3 i + 3 j + 2 k , a = i 2 j 2 k . 1. scalar projection = 7 3 2. scalar projection = 1 3. scalar projection = 2 4. scalar projection = 4 3 5. scalar projection = 5 3 005 10.0 points Find the vector projection of b onto a when b = ( 4 , 1 ) , a = ( 3 , 2 ) ....
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 Spring '10
 KUSHNER

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