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3 cards from this section. Quick, good the night before a test.
What is a linear transformation?
Think about how vectors interact under transformations.
What condition must be met for a solution to exist in a linear system?
Revisit how the image relates to the output of the transformation.
What does the kernel of a linear transformation represent?
Consider what happens to vectors under a transformation.
True or False: A solution exists for all systems of linear equations.
Revisit the conditions for the existence of solutions.
Given a system of equations defined by matrix A, determine if the vector b can be expressed as a linear combination of A's columns. What steps would you take?
Look for free variables indicating multiple solutions or restricted solutions.
Consider a linear transformation that maps R^2 to R^2. How would you determine the kernel and image geometrically?
Sketch out how vectors transform using the mapping.
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