727 prompts matching "Practice: Finding an unknown force from a closed polygon"
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Worked Example: Reading the symbol used for a binary operation
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Spot My Mistake: A binary operation defined on a set of three elements
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Common Mistakes: A binary operation that is ordinary addition in disguise
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Final Revision: Deciding whether a given rule really is a binary operation
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Worked Example: Testing the even numbers for closure under addition
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Common Mistakes: Closure on a set of three elements under a stated rule
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Worked Example: Testing a*b against b*a for a given rule
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Spot My Mistake: Testing (a*b)*c against a*(b*c)
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Worked Example: Testing whether star distributes over plus
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WAEC Prep: A rule where distributivity holds one way only
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Common Mistakes: Distributivity on a set of three elements
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WAEC Prep: The inverse of the identity element itself
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Worked Example: The law for multiplying powers of the same base
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Spot My Mistake: The law for a quotient raised to a power
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WAEC Prep: Applying two index laws inside one expression
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Common Mistakes: Why the index laws need the bases to match
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Final Revision: Evaluating a numerical expression using the index laws
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Worked Example: Rewriting a negative index as a fraction
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Spot My Mistake: A negative fractional index
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