# Calculus and vectors

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1. When you add vectors geometrically:

a) vectors are aligned tail to tail

c) vectors are aligned head to tail

d) vectors are put side by side

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2. Adding a vector to the zero vector:

a) produces zero vector

b) preserves the non-zero vector

c) changes the vector's direction

d) reduces the vector's magnitude

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3. If A⃗ is any non-zero vector, a unit vector in the same direction of A⃗ would be:

a) |A⃗|A⃗

b) (1/|A⃗|) A⃗

c) (-1/|A⃗|) A⃗

d) -|A⃗|A⃗

• Calculus and vectors -

1c, 2b, 3b

You got one out of three. Were you just guessing?

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