480 prompts matching "Why is matrix multiplication not commutative"
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Final Revision: Checking a conjugate answer by multiplying back
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Spot My Mistake: Solving a surd equation that leads to a quadratic
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Final Revision: A word problem that leads to an equation in surd form
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Spot My Mistake: A binary operation defined on a set of three elements
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Spot My Mistake: Reading closure off an operation table
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Spot My Mistake: Testing (a*b)*c against a*(b*c)
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Spot My Mistake: Finding the inverse of a given element
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Final Revision: Identity and inverse together, and what they give the set
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Final Revision: Evaluating a numerical expression using the index laws
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Spot My Mistake: A negative fractional index
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Final Revision: Converting an answer back out of index form
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Spot My Mistake: An indicial equation involving fractional bases
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Final Revision: Checking an indicial solution by substitution
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Spot My Mistake: The logarithm of the base itself
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Spot My Mistake: Evaluating an expression using the laws of logarithms
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Final Revision: Proving a logarithmic identity from the laws
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Spot My Mistake: A logarithm to base e, the natural logarithm
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Final Revision: Using change of base to prove a stated relation
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Spot My Mistake: A sequence defined by a recurrence relation
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Final Revision: Describing a sequence in words and then in symbols
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