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Introduction
Readiness Assurance.
Before beginning this chapter, you should be able to...
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Compose functions of real numbers.
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Identify the domain and codomain of linear transformations.
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Calculate the standard matrix of a linear transformation and use it to compute the image of a given vector under the transformation.
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Determine if a linear transformation is injective and/or surjective.
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Interpret the ideas of injectivity and surjectivity in multiple ways.
