1,483 prompts matching "IGCSE practice: Reflecting a shape in the line y equals x"
Worked example: Finding the height of a mast from its angle of elevation
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Practice set: The logarithm of one, and of the base itself
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Worked example: Using the power law to simplify a logarithmic expression
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Practice set: Adding and subtracting in modular arithmetic
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Worked example: Bringing a negative number into the right residue class
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Practice set: The empty set and the universal set
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Explain back: Finite, infinite and equal sets
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Worked example: The number of elements in a set
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Practice set: The difference of two sets
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Worked example: The formula for the number in a union
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Worked example: The converse, inverse and contrapositive
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Practice set: The truth table for conjunction and disjunction
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Worked example: Changing the subject when the letter occurs on both sides
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Practice set: Joint variation with two variables
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Worked example: Using the constant to predict a further value
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Practice set: Factorising when that coefficient is not one
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Worked example: Substituting into the quadratic formula carefully
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Nigerian scenario: The path of a thrown object or the shape of an arch
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Practice set: The angle subtended at the centre by an arc of stated length
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Practice set: The radius of a sector from its area and angle
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