1,483 prompts matching "Show that, hence find: Leaving an answer in exact surd form rather than rounding"
Worked example: A two-step problem needing two ratios
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Teach me: The exact ratios for 30 and 60 degrees
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Worked example: The reference angle for an angle beyond 90 degrees
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Quiz me: The shape of the tangent curve and its asymptotes
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Teach me: A logarithm as the index a base must be raised to
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Worked example: Using the power law to simplify a logarithmic expression
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Teach me: The characteristic and the mantissa
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Teach me: What arithmetic modulo n means
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Worked example: Bringing a negative number into the right residue class
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Teach me: What a set is, and how one is written
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Worked example: The number of elements in a set
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Worked example: The formula for the number in a union
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Teach me: How many rows a truth table needs
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Worked example: A tautology and a contradiction
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Teach me: Direct variation and its constant
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Teach me: Recognising a quadratic expression
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Worked example: Solving by setting each factor to nought
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Teach me: Why completing the square works
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Worked example: Substituting into the quadratic formula carefully
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Teach me: The parabola and which way it opens
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