In-Class

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In-Class

A small in-class quiz following our lecture.

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What can the dot product help us compute between two vectors?

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The magnitude of a third vector

The angle between the two vectors.

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What does the cross product of two vectors give us?

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A vector that is orthogonal (i.e. perpendicular, or at a right angle) to both initial vectors

A vector that is parallel to both vectors.

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What is the identity matrix?

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A Matrix that when multiplied does not effect any other matrix. It has 1's across its diagonal.

A matrix with all zeroes.

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Does order matter when multiplying matrices?

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Yes, multiplying or 'concatenating' several matrices will provide a different ordering depending on the operations you perform.

It never matters.

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