1,483 prompts matching "IGCSE-style teach me: Restricting a domain so that an inverse exists"
WAEC pitfalls: Carrying as though the base were ten
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Nigerian scenario: Number bases in a described counting or coding task
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WAEC pitfalls: Equating indices when the bases have not been matched
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WAEC pitfalls: Labelling the sides relative to the wrong angle
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WAEC pitfalls: Quoting a special angle ratio as a decimal when an exact value is asked for
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Nigerian scenario: Special angles in a described construction problem
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WAEC pitfalls: Taking the angle from the vertical instead of the horizontal
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Nigerian scenario: Sighting a building or mast in a Nigerian town
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WAEC pitfalls: Treating the logarithm of a sum as the sum of logarithms
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WAEC pitfalls: A negative characteristic written the wrong way
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Nigerian scenario: A calculation from Nigerian trade done with logarithms
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WAEC pitfalls: Reducing to a residue outside the permitted range
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Nigerian scenario: Market days and the days of the week as modular cycles
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WAEC pitfalls: Counting the overlap twice in a union
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WAEC pitfalls: Filling a truth table column out of order
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WAEC pitfalls: Applying an inverse operation to only part of a side
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Nigerian scenario: Rearranging a formula from Nigerian trade or building
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WAEC pitfalls: Treating a partial variation as a direct one
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Nigerian scenario: A variation problem from Nigerian transport fares
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WAEC pitfalls: Cancelling a factor containing the unknown and losing a root
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