480 prompts matching "Why is matrix multiplication not commutative"
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WAEC Prep: A rule where distributivity holds one way only
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Show All Working: Using distributivity to simplify an expression
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Common Mistakes: Distributivity on a set of three elements
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Practice: Why an identity element must work from both sides
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Explain Back: What an inverse element is
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Common Mistakes: Checking an inverse by working the operation both ways
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Explain Back: The law for a product raised to a power
I have just studied the law for a product raised to a power in my SS1 Further Mathematics
Spot My Mistake: The law for a quotient raised to a power
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Common Mistakes: Writing a root as a fractional index before simplifying
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Worked Example: Solving an indicial equation where one side must be factorised first
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Common Mistakes: An indicial equation solved by substitution
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Common Mistakes: Reading a logarithm from a table
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Final Revision: The characteristic and the mantissa of a logarithm
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Common Mistakes: Rejecting a root that makes a logarithm undefined
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Common Mistakes: A logarithmic equation that becomes a quadratic
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Show All Working: Deciding whether a given number is a term of a sequence
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Common Mistakes: The Fibonacci sequence and the rule behind it
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Common Mistakes: An arithmetic progression with a negative common difference
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Practice: Finding n when the sum of an arithmetic progression is given
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Common Mistakes: Proving the sum formula by pairing the terms
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